Merge pull request #1908 in HDFFV/hdf5 from ~BMRIBLER/hdf5-bmr:develop to develop

- Added new chunk query functions: H5Dget_num_chunks(), H5Dget_chunk_info(), and H5Dget_chunk_info_by_coord()
- Fixed iterator issue in H5EA_iterate(), H5FA_iterate(), and H5D__none_idx_iterate()

* commit '96dab622e3bbe75d85b0cef3ca2bd5288cf4ac32':
  Fixed error code and error messages Tested on Jelly (very minor)
  Changed H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COOR to H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COORD per a review comment.
  Updated comments
  Updated based on reviews and refactored test code
  Code cleanup and refactor
  Re-ordered items w.r.t. date.
  Fixed typo
  Added notes about HDFFV-10677 and HDFFV-10661
  HDFFV-10677 and HDFFV-10661

1 files changed, 1964 insertions, 0 deletions

diff --git a/test/chunk_info.c b/test/chunk_info.c
new file mode 100644
index 0000000..a28ca84
--- /dev/null
+++ b/test/chunk_info.c
@@ -0,0 +1,1964 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*
+ *
+ * Purpose:     Tests chunk query API functions
+ *
+ * Modification:
+ *              Many tests were added for HDFFV-10677. -BMR, August 2019
+ *
+ * Test structure:
+ *          main()
+ *              test_basic_query()
+ *              test_get_chunk_info_highest_v18()
+ *              test_get_chunk_info_v110()
+ *                  test_chunk_info_single_chunk()
+ *                  test_chunk_info_implicit()
+ *                  test_chunk_info_fixed_array()
+ *                  test_chunk_info_extensible_array()
+ *                  test_chunk_info_version2_btrees()
+ *                  test_failed_attempts()
+ *              test_flt_msk_with_skip_compress()
+ *
+ * Helper functions:
+ *          read_each_chunk()
+ *          verify_and_write()
+ *          verify_get_chunk_info()
+ *          verify_get_chunk_info_by_coord()
+ *          verify_empty_chunk_info()
+ *          index_type_str()
+ *
+ */
+#define H5D_FRIEND
+#define H5D_TESTING     /* to use H5D__ functions */
+#include "H5Dpkg.h"
+
+#include "testhdf5.h"
+#include "zlib.h"
+
+/* Test file names, using H5F_libver_t as indices */
+const char *FILENAME[] = {
+        "tchunk_info_earliest",
+        "tchunk_info_v18",
+        "tchunk_info_v110",
+        "tchunk_info_v112",
+        NULL
+};
+
+/* File to be used in test_failed_attempts */
+#define FILTERMASK_FILE         "tflt_msk"
+#define BASIC_FILE              "basic_query"
+
+/* Parameters for testing chunk querying */
+#define SIMPLE_CHUNKED_DSET_NAME     "Chunked Dataset"
+#define CONTIGUOUS_DSET_NAME         "Contiguous Dataset"
+#define EMPTY_DSET_NAME              "Empty Dataset"
+#define EMPTY_EARLY_ALLOC_DSET_NAME  "Empty Dataset with ALLOC_TIME_EARLY"
+#define SINGLE_CHUNK_DSET_NAME       "Single Chunk Index Dataset"
+#define IMPLICIT_INDEX_DSET_NAME     "Implicit Index Dataset"
+#define FIXED_ARR_INDEX_DSET_NAME    "Fixed Array Index Dataset"
+#define EXT_ARR_INDEX_DSET_NAME      "Extensible Array Index Dataset"
+#define V2_BTREE_INDEX_DSET_NAME     "Version 2 B-Tree Index Dataset"
+#define SKIP_FILTER_DSET_NAME        "Dataset with Skipping One Filter"
+#define FILENAME_BUF_SIZE       256  /* Size for file names */
+#define RANK                    2    /* Rank for datasets */
+
+/* Dimension of the dataset */
+#define NX                      24
+#define NY                      16
+
+/* Dimension of the chunk */
+#define CHUNK_NX                6
+#define CHUNK_NY                4
+
+/* X/Y coords of first chunk written */
+#define START_CHK_X             0
+#define START_CHK_Y             2
+
+/* X/Y coord of last chunk written */
+#define END_CHK_X               2
+#define END_CHK_Y               4
+
+/* X and Y coords of an empty chunk */
+#define EMPTY_CHK_X             0
+#define EMPTY_CHK_Y             0
+
+/* Size of a chunk when the entire dataset is a one single chunk */
+#define SINGLE_CHK_SIZE         (NX*NY*sizeof(int))
+
+/* Size of a chunk */
+#define CHK_SIZE                (CHUNK_NX*CHUNK_NY*sizeof(int))
+
+/* Size of an empty chunk */
+#define EMPTY_CHK_SIZE          0
+
+/* Number of maximum chunks without extending */
+#define NUM_CHUNKS              ((NX/CHUNK_NX)*(NY/CHUNK_NY))
+
+/* Number of chunks that have been written */
+#define NUM_CHUNKS_WRITTEN      4
+#define ONE_CHUNK_WRITTEN       1
+#define TWO_CHUNKS_WRITTEN      2
+#define NO_CHUNK_WRITTEN        0
+
+/* For testing invalid arguments */
+#define NONEXIST_CHK_INDEX      3
+#define OUTOFRANGE_CHK_INDEX    5
+#define INVALID_CHK_INDEX       5
+
+/* For compressed data */
+#define DEFLATE_SIZE_ADJUST(s) (ceil(((double)(s))*1.001)+12)
+
+/* For use in error reporting */
+#define MSG_CHK_ADDR    "Chunk address should not be HADDR_UNDEF because of H5D_ALLOC_TIME_EARLY."
+#define MSG_CHK_SIZE    "Chunk size should not be 0 because of H5D_ALLOC_TIME_EARLY."
+
+/* Utility function to initialize arguments */
+void reinit_vars(unsigned *read_flt_msk, haddr_t *addr, hsize_t *size);
+
+/* Helper function containing common code that verifies indexing type
+   and number of chunks */
+static int verify_and_write(hid_t chunkfile, const char* dset_name, hid_t dspace, H5D_chunk_index_t exp_idx_type, hsize_t exp_num_chunks, unsigned flt_msk);
+static int verify_get_chunk_info(hid_t dset, hid_t dspace, hsize_t chk_index, hsize_t exp_chk_size, hsize_t *exp_offset, unsigned exp_flt_msk);
+static int verify_get_chunk_info_by_coord(hid_t dset, hsize_t *offset, hsize_t exp_chk_size, unsigned exp_flt_msk);
+static int verify_empty_chunk_info(hid_t dset, hsize_t *offset);
+static const char* index_type_str(H5D_chunk_index_t idx_type);
+
+/*-------------------------------------------------------------------------
+ * Function:    read_each_chunk (helper function)
+ *
+ * Purpose:     Reads the chunk specified by its offset and verifies that
+ *              it contains the same data as what was written.  This function
+ *              is used in various test_get_chunk_info... functions.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        September 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t read_each_chunk(hid_t dset_id, hsize_t *offset, void *direct_buf)
+{
+    int      read_buf[CHUNK_NX][CHUNK_NY];
+    unsigned read_flt_msk = 0;
+
+    HDmemset(&read_buf, 0, sizeof(read_buf));
+
+    /* Read the chunk specified by its offset */
+    if(H5Dread_chunk(dset_id, H5P_DEFAULT, offset, &read_flt_msk, read_buf) < 0)
+        return FAIL;
+
+    /* Verify that read chunk is the same as the corresponding written one */
+    if(HDmemcmp(direct_buf, read_buf, CHUNK_NX*CHUNK_NY) != 0)
+    {
+        HDfprintf(stderr, "Read chunk differs from written chunk at offset (%d,%d)\n", offset[0], offset[1]);
+        return FAIL;
+    }
+
+    return SUCCEED;
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    reinit_vars (helper function)
+ *
+ * Purpose:     Wipes out variables for the next use, used in various tests.
+ *
+ * Return:      Won't fail
+ *
+ * Date:        September 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+void reinit_vars(unsigned *read_flt_msk, haddr_t *addr, hsize_t *size)
+{
+    if(read_flt_msk)
+        *read_flt_msk = 0;
+    if(addr)
+        *addr = 0;
+    if(size)
+        *size = 0;
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    verify_get_chunk_info (helper function)
+ *
+ * Purpose:     Verifies that H5Dget_chunk_info returns correct
+ *              values for a chunk.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+verify_get_chunk_info(hid_t dset, hid_t dspace, hsize_t chk_index, hsize_t exp_chk_size, hsize_t *exp_offset, unsigned exp_flt_msk)
+{
+    unsigned read_flt_msk = 0;   /* Read filter mask */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+
+    if(H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size) < 0)
+        TEST_ERROR
+    CHECK(addr, HADDR_UNDEF, "H5Dget_chunk_info");
+    VERIFY(size, exp_chk_size, "H5Dget_chunk_info, chunk size");
+    VERIFY(read_flt_msk, exp_flt_msk, "H5Dget_chunk_info, filter mask");
+    VERIFY(out_offset[0], exp_offset[0], "H5Dget_chunk_info, offset[0]");
+    VERIFY(out_offset[1], exp_offset[1], "H5Dget_chunk_info, offset[1]");
+    return SUCCEED;
+
+error:
+    return FAIL;
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    verify_get_chunk_info_by_coord (helper function)
+ *
+ * Purpose:     Verifies that H5Dget_chunk_info_by_coord returns correct
+ *              values for a chunk.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+verify_get_chunk_info_by_coord(hid_t dset, hsize_t *offset, hsize_t exp_chk_size, unsigned exp_flt_msk)
+{
+    unsigned read_flt_msk = 0;   /* Read filter mask */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+
+    /* Get info of the chunk at logical coordinates specified by offset */
+    if(H5Dget_chunk_info_by_coord(dset, offset, &read_flt_msk, &addr, &size) < 0)
+        TEST_ERROR
+    CHECK(addr, HADDR_UNDEF, "H5Dget_chunk_info_by_coord");
+    VERIFY(size, exp_chk_size, "H5Dget_chunk_info_by_coord, chunk size");
+    VERIFY(read_flt_msk, exp_flt_msk, "H5Dget_chunk_info_by_coord, filter mask");
+    return SUCCEED;
+
+error:
+    return FAIL;
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    verify_empty_chunk_info (helper function)
+ *
+ * Purpose:     Verifies that H5Dget_chunk_info_by_coord returns correct
+ *              values for an empty chunk.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        August 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+verify_empty_chunk_info(hid_t dset, hsize_t *offset)
+{
+    unsigned read_flt_msk = 0;   /* Read filter mask */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+
+    /* Get info of the chunk at logical coordinates specified by offset */
+    if(H5Dget_chunk_info_by_coord(dset, offset, &read_flt_msk, &addr, &size) < 0)
+        TEST_ERROR
+    VERIFY(addr, HADDR_UNDEF, "H5Dget_chunk_info_by_coord, chunk address");
+    VERIFY(size, EMPTY_CHK_SIZE, "H5Dget_chunk_info_by_coord, chunk size");
+    return SUCCEED;
+
+error:
+    return FAIL;
+}
+
+/*-------------------------------------------------------------------------
+ * Function:    index_type_str (helper function)
+ *
+ * Purpose:     Returns the string containing the text associated with the
+ *              given indexing scheme.  For use in error messages.
+ *
+ * Return:      Success:    a valid indexing scheme string
+ *              Failure:    a note indicating the indexing type is invalid
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static const char*
+index_type_str(H5D_chunk_index_t idx_type)
+{
+    switch (idx_type) {
+        case H5D_CHUNK_IDX_SINGLE:
+            return("Single Chunk index type");
+        case H5D_CHUNK_IDX_NONE:
+            return("Implicit index type");
+        case H5D_CHUNK_IDX_FARRAY:
+            return("Fixed Array index type");
+        case H5D_CHUNK_IDX_EARRAY:
+            return("Extensible Array index type");
+        case H5D_CHUNK_IDX_BT2:
+            return("Version 2 B-tree index type");
+        case H5D_CHUNK_IDX_BTREE:
+            return("Version 1 B-tree index type (default)");
+        case H5D_CHUNK_IDX_NTYPES:
+        default:
+            return("invalid index type");
+    }
+} /* index_type_str */
+
+/*-------------------------------------------------------------------------
+ * Function:    verify_and_write (helper function)
+ *
+ * Purpose:     Verifies that chunk indexing scheme and number of chunks of
+ *              the dataset matches the expected values, then write data to
+ *              a subset of chunks.  This function opens the dataset then
+ *              closes it after writing.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+verify_and_write(hid_t chunkfile, const char* dset_name, hid_t dspace, H5D_chunk_index_t exp_idx_type, hsize_t exp_num_chunks, unsigned flt_msk)
+{
+    hid_t    dset = H5I_INVALID_HID;    /* Dataset ID */
+    H5D_chunk_index_t idx_type;         /* Dataset chunk index type */
+    hsize_t  offset[2] = {0, 0};        /* Offset coordinates of a chunk */
+    hsize_t  nchunks = 0;               /* Number of chunks */
+    hsize_t  ii, jj;                    /* Array indices */
+    int      n;   /* Used as chunk index, but int to avoid conversion warning */
+    int      direct_buf[NUM_CHUNKS][CHUNK_NX][CHUNK_NY];/* Data in chunks */
+
+    /* Open the dataset */
+    if((dset = H5Dopen2(chunkfile, dset_name, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Get the chunk indexing type of the dataset */
+    if(H5Dget_chunk_index_type(dset, &idx_type) < 0)
+        TEST_ERROR
+
+    /* Ensure the correct chunk indexing scheme is used */
+    if(idx_type != exp_idx_type)
+    {
+        char msg[256];
+        sprintf(msg, "Should be using %s.\n", index_type_str(idx_type));
+        FAIL_PUTS_ERROR(msg);
+    }
+
+    /* Get and verify the number of chunks */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, exp_num_chunks, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify the number of chunks again, passing in H5S_ALL */
+    if(H5Dget_num_chunks(dset, H5S_ALL, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, exp_num_chunks, "H5Dget_num_chunks, number of chunks");
+
+    /* Initialize the array of chunk data for all NUM_CHUNKS chunks */
+    for(n = 0; n < NUM_CHUNKS; n++)
+        for(ii = 0; ii < CHUNK_NX; ii++)
+            for(jj = 0; jj < CHUNK_NY; jj++)
+                direct_buf[n][ii][jj] = n + 1;
+
+    /* Write only NUM_CHUNKS_WRITTEN chunks at the following logical coords:
+       (0,2) (0,3) (1,2) (1,3) */
+    n = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, n++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+            if(H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, CHK_SIZE, (void*)direct_buf[n]) < 0)
+                TEST_ERROR
+        }
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+    } H5E_END_TRY;
+    return FAIL;
+} /* verify_and_write */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_get_chunk_info_highest_v18
+ *
+ * Purpose:     Test getting various chunk information
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Description:
+ *              This function tests the new API functions added for EED-343:
+ *              H5Dget_num_chunks, H5Dget_chunk_info, and
+ *              H5Dget_chunk_info_by_coord for high bound up to 1.8.
+ *
+ * Date:        September 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_get_chunk_info_highest_v18(hid_t fapl)
+{
+    char     filename[FILENAME_BUF_SIZE];   /* File name */
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY};        /* Chunk dimensions */
+    int      direct_buf[NUM_CHUNKS][CHUNK_NX][CHUNK_NY];  /* Data in chunks */
+    hsize_t  maxdims[2] = {H5S_UNLIMITED, H5S_UNLIMITED}; /* 2 unlimited dims */
+    hsize_t  out_offset[2];      /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  dims[2]  = {NX, NY};/* Dataset dimensions */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    int      fillvalue = -1;     /* Fill value */
+    int      aggression = 9;     /* Compression aggression setting */
+    hsize_t  offset[2] = {0, 0}; /* Offset coordinates of a chunk */
+    const Bytef *z_src = (const Bytef*)(direct_buf);
+    Bytef       *z_dst;          /*destination buffer */
+    uLongf       z_dst_nbytes = (uLongf)DEFLATE_SIZE_ADJUST(CHK_SIZE);
+    uLong        z_src_nbytes = (uLong)CHK_SIZE;
+    void         *outbuf = NULL; /* Pointer to new buffer */
+    hsize_t  ii, jj;             /* Array indices */
+    int      n;   /* Used as chunk index, but int to avoid conversion warning */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("getting chunk information in file with version prior to 1.10");
+
+    /* Create the file */
+    h5_fixname(FILENAME[H5F_LIBVER_V18], fapl, filename, sizeof filename);
+
+    /* Set version bounds for creating the file.  High bound to V18 to test
+       chunked dataset that use B-tree v1 structures to index chunks. */
+    if(H5Pset_libver_bounds(fapl, H5F_LIBVER_EARLIEST, H5F_LIBVER_V18) < 0)
+        TEST_ERROR
+
+    chunkfile = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    if(chunkfile < 0)
+        TEST_ERROR
+
+    /* Create the file and memory dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, maxdims)) < 0)
+        TEST_ERROR
+
+    /* Set dset creation properties with chunking, compression, and fillvalue */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0) TEST_ERROR
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0) TEST_ERROR
+
+#ifdef H5_HAVE_FILTER_DEFLATE
+    if(H5Pset_deflate(cparms, (unsigned)aggression) < 0) TEST_ERROR
+#endif /* end H5_HAVE_FILTER_DEFLATE */
+
+    /* Set fill value */
+    if(H5Pset_fill_value(cparms, H5T_NATIVE_INT, &fillvalue) < 0) TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, SIMPLE_CHUNKED_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Initialize the array of chunk data for all NUM_CHUNKS chunks */
+    for(n = 0; n < NUM_CHUNKS; n++)
+        for(ii = 0; ii < CHUNK_NX; ii++)
+            for(jj = 0; jj < CHUNK_NY; jj++)
+                direct_buf[n][ii][jj] = n + 1;
+
+    /* Allocate output (compressed) buffer */
+    outbuf = malloc(z_dst_nbytes);
+    z_dst = (Bytef *)outbuf;
+
+    /* Perform compression from the source to the destination buffer */
+    ret = compress2(z_dst, &z_dst_nbytes, z_src, z_src_nbytes, aggression);
+
+    /* Check for various zlib errors */
+    if(Z_BUF_ERROR == ret) {
+        fprintf(stderr, "overflow");
+        TEST_ERROR
+    } else if(Z_MEM_ERROR == ret) {
+        fprintf(stderr, "deflate memory error");
+        TEST_ERROR
+    } else if(Z_OK != ret) {
+        fprintf(stderr, "other deflate error");
+        TEST_ERROR
+    }
+
+    /* Write only NUM_CHUNKS_WRITTEN chunks at the following logical coords:
+       (0,2) (0,3) (1,2) (1,3) */
+    n = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, n++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+            ret = H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, CHK_SIZE, (void*)direct_buf[n]);
+            if(ret < 0) TEST_ERROR
+        }
+
+    /* Read each chunk in the subset of chunks and verify the values */
+     /* if(read_each_chunk(dset, offset, (void*)direct_buf[chk_index]) < 0)
+    if(read_each_chunk(dset) == FAIL)
+        TEST_ERROR
+ */ 
+
+    /* Free the read buffer */
+    if(outbuf)
+        HDfree(outbuf);
+
+    if(H5Fflush(dset, H5F_SCOPE_LOCAL) < 0)
+        TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* ...open it again to test the chunk query functions */
+    if((dset = H5Dopen2(chunkfile, SIMPLE_CHUNKED_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Get and verify the number of chunks written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NUM_CHUNKS_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of the last written chunk again, passing in H5S_ALL
+       this time */
+    offset[0] = 6;
+    offset[1] = 12;
+    if(verify_get_chunk_info(dset, H5S_ALL, NUM_CHUNKS_WRITTEN-1, CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+    /* Attempt to get info of a non-existing chunk, should fail */
+    chk_index = OUTOFRANGE_CHK_INDEX;
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, H5S_ALL, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempt to get info of a non-existing chunk.");
+
+    /* Attempt to get info of empty chunks, verify the returned addr and size */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    offset[0] = 3 * CHUNK_NX;
+    offset[1] = 3 * CHUNK_NY;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    /* Go through all written chunks, get their info and verify the values */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(verify_get_chunk_info(dset, dspace, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+            /* Use the same offset to pass into the next ...by_coord function */
+            if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+        }
+
+    /* Close the first dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Create an empty dataset and close it */
+    dset = H5Dcreate2(chunkfile, EMPTY_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Reopen the empty dataset to verify the chunk query functions on it */
+    if((dset = H5Dopen2(chunkfile, EMPTY_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Verify that the number of chunks is 0 */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NO_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Attempt to get info of a chunk from an empty dataset, should fail */
+    chk_index = OUTOFRANGE_CHK_INDEX;
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempt to get info of a non-existing chunk.");
+
+    /* Attempt to get info of a chunk given its coords from an empty dataset,
+       should succeed with the returned address as HADDR_UNDEF and size as 0 */
+    offset[0] = EMPTY_CHK_X;
+    offset[1] = EMPTY_CHK_Y;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /************************************************************************
+     * Test empty dataset with H5D_ALLOC_TIME_EARLY                         *
+     ************************************************************************/
+
+    /* Set space allocation to early so that chunk query functions will
+       retrieve chunk information even though the dataset is empty */
+    if(H5Pset_alloc_time(cparms, H5D_ALLOC_TIME_EARLY) < 0)
+        TEST_ERROR
+
+    /* Create an empty dataset and close it */
+    dset = H5Dcreate2(chunkfile, EMPTY_EARLY_ALLOC_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Reopen the empty dataset to verify the chunk query functions on it */
+    if((dset = H5Dopen2(chunkfile, EMPTY_EARLY_ALLOC_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Verify that the number of chunks is NUM_CHUNKS */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NUM_CHUNKS, "H5Dget_num_chunks, number of chunks");
+
+    /* Attempt to get info of a chunk from an empty dataset, verify the
+       returned address and size in the case of H5D_ALLOC_TIME_EARLY */
+    chk_index = NONEXIST_CHK_INDEX;
+    reinit_vars(&read_flt_msk, &addr, &size);
+    ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    if(ret < 0) TEST_ERROR
+    /* Because of H5D_ALLOC_TIME_EARLY, addr cannot be HADDR_UNDEF and size not 0 */
+    if(addr == HADDR_UNDEF)
+        FAIL_PUTS_ERROR(MSG_CHK_ADDR);
+    if(size == EMPTY_CHK_SIZE)
+        FAIL_PUTS_ERROR(MSG_CHK_SIZE);
+
+    chk_index = 10;
+    reinit_vars(&read_flt_msk, &addr, &size);
+    ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    if(ret < 0) TEST_ERROR
+    /* Because of H5D_ALLOC_TIME_EARLY, addr cannot be HADDR_UNDEF and size not 0 */
+    if(addr == HADDR_UNDEF)
+        FAIL_PUTS_ERROR(MSG_CHK_ADDR);
+    if(size == EMPTY_CHK_SIZE)
+        FAIL_PUTS_ERROR(MSG_CHK_SIZE);
+
+    /* Attempt to get info of a chunk given its coords from an empty dataset,
+       verify the returned address and size */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(H5Dget_chunk_info_by_coord(dset, offset, &read_flt_msk, &addr, &size) < 0)
+        TEST_ERROR
+    /* Because of H5D_ALLOC_TIME_EARLY, addr cannot be HADDR_UNDEF and size not 0 */
+    if(addr == HADDR_UNDEF)
+        FAIL_PUTS_ERROR(MSG_CHK_ADDR);
+    if(size == 0)
+        FAIL_PUTS_ERROR(MSG_CHK_SIZE);
+
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Close/release resources. */
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Pclose(cparms) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_get_chunk_info_highest_v18() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_chunk_info_single_chunk
+ *
+ * Purpose:     Test getting various chunk information when Single Chunk
+ *              index type is used
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        November 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_chunk_info_single_chunk(const char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2]  = {NX, NY};           /* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {NX, NY};      /* Chunk dimensions */
+    int      data_buf[NX][NY];   /* Input buffer */
+    H5D_chunk_index_t idx_type;  /* Dataset chunk index type */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("   Single Chunk index");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, NULL)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, SINGLE_CHUNK_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* ...open it again to test the chunk query functions on a single empty
+       chunk */
+    if((dset = H5Dopen2(chunkfile, SINGLE_CHUNK_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Ensure the correct chunk indexing scheme is used */
+    if(H5Dget_chunk_index_type(dset, &idx_type) < 0)
+        TEST_ERROR
+    if(idx_type != H5D_CHUNK_IDX_SINGLE)
+        FAIL_PUTS_ERROR("Should be using Single Chunk index type");
+
+    /* Get the number of chunks and verify that no chunk has been written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NO_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Initialize the array of chunk data for the single chunk */
+    for(ii = 0; ii < NX; ii++)
+        for(jj = 0; jj < NY; jj++)
+            data_buf[ii][jj] = (int)(ii*jj);
+
+    /* Write the chunk */
+    if(H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_buf) < 0)
+        TEST_ERROR
+
+    /* Get and verify that one chunk had been written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, ONE_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Offset of the only chunk */
+    offset[0] = 0;
+    offset[1] = 0;
+
+    /* Get and verify info of the first and only chunk */
+    if(verify_get_chunk_info(dset, H5S_ALL, 0, SINGLE_CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification H5Dget_chunk_info failed\n");
+ 
+    /* Get and verify info of the chunk at logical coordinates (0,0) */
+    if(verify_get_chunk_info_by_coord(dset, offset, SINGLE_CHK_SIZE, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+
+    /* Attempt to get chunk info given an invalid chunk index and verify
+     * that failure occurs */
+    chk_index = INVALID_CHK_INDEX;
+    reinit_vars(&read_flt_msk, &addr, &size);
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        TEST_ERROR
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_chunk_info_single_chunk() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_chunk_info_implicit
+ *
+ * Purpose:     Test getting various chunk information when Implicit
+ *              index type is used
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        November 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_chunk_info_implicit(char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2]  = {NX, NY};           /* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY}; /* Chunk dimensions */
+    unsigned flt_msk = 0;                   /* Filter mask */
+    hsize_t  chk_index = 0;                 /* Index of a chunk */
+    hsize_t  ii, jj;                        /* Array indices */
+
+    TESTING("   Implicit index");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, NULL)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Set allocation time to early */
+    if(H5Pset_alloc_time(cparms, H5D_ALLOC_TIME_EARLY) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, IMPLICIT_INDEX_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Verify chunk indexing scheme and number of chunks, and write data to a
+       subset of chunks. */
+    if(verify_and_write(chunkfile, IMPLICIT_INDEX_DSET_NAME, dspace, H5D_CHUNK_IDX_NONE, NUM_CHUNKS, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification and write failed\n");
+
+    /* Open the dataset again to test getting chunk info */
+    if((dset = H5Dopen2(chunkfile, IMPLICIT_INDEX_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Go through all chunks, and get their info and verify the values */
+    chk_index = 0;
+    for(ii = 0; ii < NX/CHUNK_NX; ii++)
+        for(jj = 0; jj < NY/CHUNK_NY; jj++, chk_index++) {
+            hsize_t offset[2] = {ii * CHUNK_NX, jj * CHUNK_NY};
+
+            if(verify_get_chunk_info(dset, H5S_ALL, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+            /* Get info of a chunk and verify its information.  Note that
+               all chunks in this dataset are allocated because of the property
+               H5D_ALLOC_TIME_EARLY */
+            if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+        }
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Pclose(cparms) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_chunk_info_implicit() */
+        
+/*-------------------------------------------------------------------------
+ * Function:    test_chunk_info_fixed_array
+ *
+ * Purpose:     Test getting various chunk information when Fixed Array
+ *              index type is used
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        November 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_chunk_info_fixed_array(const char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2] = {NX, NY};            /* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY};      /* Chunk dimensions */
+    int      direct_buf[NUM_CHUNKS][CHUNK_NX][CHUNK_NY];/* Data in chunks */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    int      n;   /* Used as chunk index, but int to avoid conversion warning */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("   Fixed Array index");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, NULL)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, FIXED_ARR_INDEX_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Verify chunk indexing scheme and number of chunks, and write data
+       to a subset of chunks */
+    if(verify_and_write(chunkfile, FIXED_ARR_INDEX_DSET_NAME, dspace, H5D_CHUNK_IDX_FARRAY, NO_CHUNK_WRITTEN, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification and write failed\n");
+
+    /* Open the dataset again to test getting chunk info */
+    if((dset = H5Dopen2(chunkfile, FIXED_ARR_INDEX_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Get and verify the number of chunks written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NUM_CHUNKS_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of each written chunk */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+            if(verify_get_chunk_info(dset, dspace, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+        }
+
+    /* Attempt to get info using an out-of-range index, chk_index is now > NUM_CHUNKS_WRITTEN.  should fail */
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempted to get info of a chunk using an out-of-range index.");
+
+    /* Attempt to get info of empty chunks, verify the returned address and size */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    offset[0] = 3 * CHUNK_NX;
+    offset[1] = 3 * CHUNK_NY;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    /* Initialize the array of chunk data for all NUM_CHUNKS chunks */
+    for(n = 0; n < NUM_CHUNKS; n++)
+        for(ii = 0; ii < CHUNK_NX; ii++)
+            for(jj = 0; jj < CHUNK_NY; jj++)
+                direct_buf[n][ii][jj] = n + 1;
+
+    /* Read each chunk and verify the values */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(read_each_chunk(dset, offset, (void*)direct_buf[chk_index]) < 0)
+                TEST_ERROR
+        }
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_chunk_info_fixed_array() */
+        
+/*-------------------------------------------------------------------------
+ * Function:    test_chunk_info_extensible_array
+ *
+ * Purpose:     Test getting various chunk information when Extensible Array
+ *              index type is used
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        November 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_chunk_info_extensible_array(const char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2] = {NX, NY};            /* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY}; /* Chunk dimensions */
+    hsize_t  maxdims[2] = {H5S_UNLIMITED, NY};     /* One unlimited dimension */
+    int      direct_buf[NUM_CHUNKS][CHUNK_NX][CHUNK_NY];/* Data in chunks */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    int      n;   /* Used as chunk index, but int to avoid conversion warning */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("   Extensible Array index");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, maxdims)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, EXT_ARR_INDEX_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Verify chunk indexing scheme and number of chunks, and write data
+       to a subset of chunks */
+    if(verify_and_write(chunkfile, EXT_ARR_INDEX_DSET_NAME, dspace, H5D_CHUNK_IDX_EARRAY, NO_CHUNK_WRITTEN, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification and write failed\n");
+
+    /* Open the dataset again to test getting chunk info */
+    if((dset = H5Dopen2(chunkfile, EXT_ARR_INDEX_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Get and verify the number of chunks written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NUM_CHUNKS_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of each written chunk */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(verify_get_chunk_info(dset, dspace, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+            if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+        }
+
+    /* Attempt to get info using an out-of-range index, should fail */
+    chk_index = OUTOFRANGE_CHK_INDEX;
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempted to get info of a chunk using an out-of-range index.");
+
+    /* Attempt to get info of empty chunks, verify the returned address and size */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    offset[0] = 3 * CHUNK_NX;
+    offset[1] = 3 * CHUNK_NY;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    /* Initialize the array of chunk data for all NUM_CHUNKS chunks */
+    for(n = 0; n < NUM_CHUNKS; n++)
+        for(ii = 0; ii < CHUNK_NX; ii++)
+            for(jj = 0; jj < CHUNK_NY; jj++)
+                direct_buf[n][ii][jj] = n + 1;
+
+    /* Read each chunk and verify the values */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(read_each_chunk(dset, offset, (void*)direct_buf[chk_index]) < 0)
+                TEST_ERROR
+        }
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_chunk_info_extensible_array() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_chunk_info_version2_btrees
+ *
+ * Purpose:     Test getting various chunk information when Version 2 B-trees
+ *              index type is used
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        November 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_chunk_info_version2_btrees(const char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2]  = {NX, NY};/* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY};      /* Chunk dimensions */
+    hsize_t  maxdims[2] = {H5S_UNLIMITED, H5S_UNLIMITED}; /* Two unlimited dims */
+    int      direct_buf[NUM_CHUNKS][CHUNK_NX][CHUNK_NY];/* Data in chunks */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("   Version 2 B-trees index");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, maxdims)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(chunkfile, V2_BTREE_INDEX_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Verify chunk indexing scheme and number of chunks, and write data
+       to a subset of chunks */
+    if(verify_and_write(chunkfile, V2_BTREE_INDEX_DSET_NAME, dspace, H5D_CHUNK_IDX_BT2, NO_CHUNK_WRITTEN, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification and write failed\n");
+
+    /* Open the dataset again to test getting chunk info */
+    if((dset = H5Dopen2(chunkfile, V2_BTREE_INDEX_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Get and verify the number of chunks written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NUM_CHUNKS_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Go through all written chunks, get their info and verify the values */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(verify_get_chunk_info(dset, dspace, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+            if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+                FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+        }
+
+    /* Attempt to provide out-of-range offsets, should fail */
+    chk_index = OUTOFRANGE_CHK_INDEX;
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempted to get info of a chunk using an out-of-range index.");
+
+    /* Attempt to get info of empty chunks, verify the returned address and size */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    offset[0] = 3 * CHUNK_NX;
+    offset[1] = 3 * CHUNK_NY;
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    /* Read each chunk and verify the values */
+    chk_index = 0;
+    for(ii = START_CHK_X; ii < END_CHK_X; ii++)
+        for(jj = START_CHK_Y; jj < END_CHK_Y; jj++, chk_index++) {
+            offset[0] = ii * CHUNK_NX;
+            offset[1] = jj * CHUNK_NY;
+
+            if(read_each_chunk(dset, offset, (void*)direct_buf[chk_index]) < 0)
+                TEST_ERROR
+        }
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_chunk_info_version2_btrees() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_basic_query
+ *
+ * Purpose:     Tests basic operations to ensure the chunk query functions
+ *              work properly.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_basic_query(hid_t fapl)
+{
+    char     filename[FILENAME_BUF_SIZE];   /* File name */
+    hid_t    basicfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hsize_t  dims[2] = {NX, NY};            /* Dataset dimensions */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY};      /* Chunk dimensions */
+    int      direct_buf[CHUNK_NX][CHUNK_NY];/* Data in chunks */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("basic operations");
+
+    /* Create the file */
+    h5_fixname(BASIC_FILE, fapl, filename, sizeof filename);
+
+    /* Create a new file. */
+    if((basicfile = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, NULL)) < 0)
+        TEST_ERROR
+
+    /* Enable chunking */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR
+
+    if(H5Pset_chunk(cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR
+
+    /* Create a new dataset using cparms creation properties */
+    dset = H5Dcreate2(basicfile, SIMPLE_CHUNKED_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Get the number of chunks and verify that no chunk has been written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, NO_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Initialize the array of chunk data for the single chunk */
+    for(ii = 0; ii < CHUNK_NX; ii++)
+        for(jj = 0; jj < CHUNK_NY; jj++)
+            direct_buf[ii][jj] = (int)(ii*jj);
+
+    /* Write the chunk of data */
+    offset[0] = CHUNK_NX;
+    offset[1] = CHUNK_NY;
+    if(H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, CHK_SIZE, direct_buf) < 0)
+        TEST_ERROR;
+
+    /* Get and verify that one chunk had been written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, ONE_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of the first and only chunk */
+    if(verify_get_chunk_info(dset, H5S_ALL, 0, CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification H5Dget_chunk_info failed\n");
+ 
+    /* Get and verify info of the chunk at the offset (CHUNK_NX,CHUNK_NY) */
+    if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+
+    /* Attempt to get chunk info given an invalid chunk index and verify
+     * that failure occurs */
+    chk_index = INVALID_CHK_INDEX;
+    reinit_vars(&read_flt_msk, &addr, &size);
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        TEST_ERROR
+
+    /* Write the chunk of data to another location */
+    offset[0] = 0;
+    offset[1] = 0;
+    if(H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, CHK_SIZE, direct_buf) < 0)
+        TEST_ERROR;
+
+    /* Get and verify that two chunks had been written */
+    if(H5Dget_num_chunks(dset, dspace, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, TWO_CHUNKS_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of the first written chunk in the dataset, its
+       offset should be (0,0) */
+    if(verify_get_chunk_info(dset, H5S_ALL, 0, CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification H5Dget_chunk_info failed\n");
+ 
+    /* Get and verify info of the chunk at the offset (0,0) */
+    if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+
+    /* Get and verify info of the second written chunk in the dataset, its
+       offset should be (CHUNK_NX, CHUNK_NY) */
+    offset[0] = CHUNK_NX;
+    offset[1] = CHUNK_NY;
+    if(verify_get_chunk_info(dset, H5S_ALL, 1, CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification H5Dget_chunk_info failed\n");
+ 
+    /* Get and verify info of the chunk at the offset (CHUNK_NX, CHUNK_NY) */
+    if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+
+    /* Get and verify info of an empty chunk, at offset 
+       (2*CHUNK_NX, 2*CHUNK_NY) */
+    offset[0] = 2*CHUNK_NX;
+    offset[1] = 2*CHUNK_NY;
+    /* Get and verify info of the chunk at the offset (CHUNK_NX, CHUNK_NY) */
+    if(verify_empty_chunk_info(dset, offset) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord on empty chunk failed\n");
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Pclose(cparms) < 0) TEST_ERROR
+    if(H5Fclose(basicfile) < 0) TEST_ERROR
+
+    /* Remove the test file */
+    remove(filename);
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Fclose(basicfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_basic_query() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_failed_attempts
+ *
+ * Purpose:     Test attempting to use chunk query functions incorrectly.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Date:        August 2019
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_failed_attempts(const char *filename, hid_t fapl)
+{
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hsize_t  dims[2]  = {NX, NY};/* Dataset dimensions */
+    int      data_buf[NX][NY];   /* Input buffer */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2];          /* Offset coordinates of a chunk */
+    hsize_t  out_offset[2] = {0, 0}; /* Buffer to get offset coordinates */
+    hsize_t  size = 0;           /* Size of an allocated/written chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    haddr_t  addr = 0;           /* Address of an allocated/written chunk */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    hsize_t  ii, jj;             /* Array indices */
+    herr_t   ret; /* Temporary returned value for verifying failure */
+
+    TESTING("   Invalid Operations");
+
+    /* Open the file for reading/writing */
+    if((chunkfile = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR
+ 
+    /* Create dataspace */
+    if((dspace = H5Screate_simple(RANK, dims, NULL)) < 0)
+        TEST_ERROR
+
+    /* Create a contiguous dataset */
+    dset = H5Dcreate2(chunkfile, CONTIGUOUS_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if(dset < 0) TEST_ERROR
+
+    /* Initialize the array of data */
+    for(ii = 0; ii < NX; ii++)
+        for(jj = 0; jj < NY; jj++)
+            data_buf[ii][jj] = (int)(ii*jj);
+
+    /* Write the data */
+    if(H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data_buf) < 0)
+        TEST_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+
+    /* Open it again to test the chunk query functions on contiguous dataset */
+    if((dset = H5Dopen2(chunkfile, CONTIGUOUS_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR
+
+    /* Attempt to get the number of chunks on contiguous dataset, should fail */
+    H5E_BEGIN_TRY {
+        ret = H5Dget_num_chunks(dset, dspace, &nchunks);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempt a chunk query function on a contiguous dataset.")
+
+    /* Attempt to get chunk info on contiguous data, should fail */
+    chk_index = 0;
+    reinit_vars(&read_flt_msk, &addr, &size);
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info(dset, dspace, chk_index, out_offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempt a chunk query function on a contiguous dataset.")
+
+    /* Attempt to get chunk info at logical coordinates (0,0) on contiguous
+     * dataset, should fail */
+    offset[0] = 0;
+    offset[1] = 0;
+    H5E_BEGIN_TRY {
+        ret = H5Dget_chunk_info_by_coord(dset, offset, &read_flt_msk, &addr, &size);
+    } H5E_END_TRY;
+    if(ret != FAIL)
+        FAIL_PUTS_ERROR("    Attempt a chunk query function on a contiguous dataset.")
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(dspace);
+        H5Fclose(chunkfile);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_failed_attempts() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_get_chunk_info_v110
+ *
+ * Purpose:     Test getting various chunk information in version 1.10.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Note:        Note that the dataspace argument in these new functions are
+ *              currently not used.  The functionality involved the dataspace
+ *              will be implemented in the next version.
+ *
+ * Description:
+ *              This function tests the new API functions added for HDFFV-10677:
+ *              H5Dget_num_chunks, H5Dget_chunk_info, and
+ *              H5Dget_chunk_info_by_coord for low bound beyond 1.8.
+ *
+ * Date:        October 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_get_chunk_info_v110(hid_t fapl)
+{
+    char     filename[FILENAME_BUF_SIZE];   /* File name */
+    hid_t    chunkfile = H5I_INVALID_HID;   /* File ID */
+    H5F_libver_t low, high;                 /* File format bounds */
+
+    TESTING("getting chunk information in file with versions 1.10 and later");
+    HDprintf("\n"); /* to list sub-tests */
+
+    /* Set high bound to the current latest version */
+    high = H5F_LIBVER_LATEST;
+
+    /* Test getting info of chunked datasets in version combo up to 1.10 */
+    for(low = H5F_LIBVER_V110; low <= H5F_LIBVER_LATEST; low++) {
+        /* Set version bounds for creating file */
+        if(H5Pset_libver_bounds(fapl, low, high) < 0)
+            TEST_ERROR
+
+        /* Create the file */
+        h5_fixname(FILENAME[low], fapl, filename, sizeof filename);
+        chunkfile = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+        if(chunkfile < 0) TEST_ERROR
+
+        /* Close the file, individual tests will re-open the file with different
+           libvers via the fapl */
+        if(H5Fclose(chunkfile) < 0) TEST_ERROR
+
+        /* Test getting chunk info when Single Chunk index type is used */
+        if(test_chunk_info_single_chunk(filename, fapl) < 0)
+            TEST_ERROR
+
+        /* Test getting chunk info when Implicit index type is used */
+        if(test_chunk_info_implicit(filename, fapl) < 0)
+            TEST_ERROR
+
+        /* Test getting chunk info when Fixed Array index type is used */
+        if(test_chunk_info_fixed_array(filename, fapl) < 0)
+            TEST_ERROR
+
+        /* Test getting chunk info when Extensible Array index type is used */
+        if(test_chunk_info_extensible_array(filename, fapl) < 0)
+            TEST_ERROR
+
+        /* Test getting chunk info when Version 2 B-trees index type is used */
+        if(test_chunk_info_version2_btrees(filename, fapl) < 0)
+            TEST_ERROR
+
+        /* Test various attempts to use the functions incorrectly */
+        if(test_failed_attempts(filename, fapl) < 0)
+            TEST_ERROR
+
+    } /* for low libver bound */
+
+    return SUCCEED;
+
+error:
+    H5_FAILED();
+    return FAIL;
+} /* test_get_chunk_info_v110() */
+
+/*-------------------------------------------------------------------------
+ * Function:    test_flt_msk_with_skip_compress
+ *
+ * Purpose:     Test getting chunk info when compression filter is skipped.
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Date:        August 2019 (based on direct_chunk.c/test_skip_compress_write1)
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+test_flt_msk_with_skip_compress(hid_t fapl)
+{
+    char     filename[FILENAME_BUF_SIZE];   /* File name */
+    hid_t    filter_file = H5I_INVALID_HID; /* File ID for filter mask */
+    hid_t    dspace = H5I_INVALID_HID;      /* Dataspace ID */
+    hid_t    mem_space = H5I_INVALID_HID;   /* Dataspace ID */
+    hid_t    dset = H5I_INVALID_HID;        /* Dataset ID */
+    hid_t    cparms = H5I_INVALID_HID;      /* Creation plist */
+    hid_t    dxpl = H5I_INVALID_HID;        /* Transfer plist */
+    hsize_t  dims[2]  = {NX, NY};           /* Dataset dimensions */
+    hsize_t  maxdims[2] = {H5S_UNLIMITED, H5S_UNLIMITED}; /* 2 unlimited dims */
+    hsize_t  chunk_dims[2] = {CHUNK_NX, CHUNK_NY};        /* Chunk dimensions */
+    int      direct_buf[CHUNK_NX][CHUNK_NY];      /* One chunk of data */
+    int      check_chunk[CHUNK_NX][CHUNK_NY];     /* Buffer to read data in */
+    int      read_direct_buf[CHUNK_NX][CHUNK_NY]; /* Buffer to read a chunk */
+    hsize_t  read_buf_size = 0;  /* buf size */
+    unsigned flt_msk = 0;        /* Filter mask */
+    unsigned read_flt_msk = 0;   /* Filter mask after direct read */
+    hsize_t  offset[2] = {0, 0}; /* Offset coordinates of a chunk */
+    hsize_t  nchunks = 0;        /* Number of chunks */
+    hsize_t  chk_index = 0;      /* Index of a chunk */
+    int      aggression = 9;     /* Compression aggression setting */
+    hsize_t  start[2];           /* Start of hyperslab */
+    hsize_t  stride[2];          /* Stride of hyperslab */
+    hsize_t  count[2];           /* Block count */
+    hsize_t  block[2];           /* Block sizes */
+    int      ii, jj;             /* Array indices */
+
+    TESTING("getting filter mask when compression filter is skipped");
+
+    /* Create the file */
+    h5_fixname(FILTERMASK_FILE, fapl, filename, sizeof filename);
+
+    /* Create a new file. */
+    if((filter_file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create file data space with unlimited dimensions. */
+    if((dspace = H5Screate_simple(RANK, dims, maxdims)) < 0)
+        TEST_ERROR;
+
+    /* Create memory data space. */
+    if((mem_space = H5Screate_simple(RANK, chunk_dims, NULL)) < 0)
+        TEST_ERROR;
+
+    /* Create dataset create property list with chunking and compression
+       enabled. */
+    if((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
+        TEST_ERROR;
+
+    if(H5Pset_chunk( cparms, RANK, chunk_dims) < 0)
+        TEST_ERROR;
+
+    if(H5Pset_deflate( cparms, (unsigned ) aggression) < 0)
+        TEST_ERROR;
+
+    /* Create a new dataset using cparms creation properties. */
+    if((dset = H5Dcreate2(filter_file, SKIP_FILTER_DSET_NAME, H5T_NATIVE_INT, dspace, H5P_DEFAULT, cparms, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create transfer property list for writing */
+    if((dxpl = H5Pcreate(H5P_DATASET_XFER)) < 0)
+        TEST_ERROR;
+
+    /* Initialize data for one chunk */
+    for(ii = 0; ii < CHUNK_NX; ii++)
+        for(jj = 0; jj < CHUNK_NY; jj++)
+            direct_buf[ii][jj] = (int)(ii*jj);
+
+    /* Indicate the compression filter is to be skipped.     */
+    flt_msk = 0x00000001;
+
+    /* Write a chunk of uncompressed data */
+    offset[0] = CHUNK_NX;
+    offset[1] = CHUNK_NY;
+    if(H5Dwrite_chunk(dset, H5P_DEFAULT, flt_msk, offset, CHK_SIZE, direct_buf) < 0)
+        TEST_ERROR;
+
+    if(H5Fflush(dset, H5F_SCOPE_LOCAL) < 0)
+        TEST_ERROR;
+
+    /* Close and re-open the dataset */
+    if(H5Dclose(dset) < 0)
+        TEST_ERROR;
+    if((dset = H5Dopen2(filter_file, SKIP_FILTER_DSET_NAME, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Select hyperslab for the chunk just written in the file */
+    start[0]  = CHUNK_NX; start[1]  = CHUNK_NY;
+    stride[0] = 1; stride[1] = 1;
+    count[0]  = 1; count[1]  = 1;
+    block[0]  = CHUNK_NX; block[1]  = CHUNK_NY;
+    if(H5Sselect_hyperslab(dspace, H5S_SELECT_SET, start, stride, count, block) < 0)
+        TEST_ERROR;
+
+    /* Read the chunk back */
+    if(H5Dread(dset, H5T_NATIVE_INT, mem_space, dspace, H5P_DEFAULT, check_chunk) < 0)
+        TEST_ERROR;
+
+    /* Check that the values read are the same as the values written */
+    for(ii = 0; ii < CHUNK_NX; ii++)
+        for(jj = 0; jj < CHUNK_NY; jj++)
+            if(direct_buf[ii][jj] != check_chunk[ii][jj]) {
+                HDprintf("    1. Read different values than written.");
+                HDprintf("    At index %d,%d\n", ii, jj);
+                HDprintf("    direct_buf=%d, check_chunk=%d\n", direct_buf[ii][jj], check_chunk[ii][jj]);
+                TEST_ERROR;
+            }
+
+    /* Query chunk storage size */
+    if(H5Dget_chunk_storage_size(dset, offset, &read_buf_size) < 0)
+        TEST_ERROR;
+    if(read_buf_size != CHK_SIZE)
+        TEST_ERROR;
+
+    /* Read the raw chunk back with H5Dread_chunk */
+    HDmemset(&read_direct_buf, 0, sizeof(read_direct_buf));
+    if(H5Dread_chunk(dset, H5P_DEFAULT, offset, &read_flt_msk, read_direct_buf) < 0)
+        TEST_ERROR;
+    if(read_flt_msk != flt_msk)
+        TEST_ERROR;
+
+    /* Check that the direct chunk read is the same as the chunk written */
+    for(ii = 0; ii < CHUNK_NX; ii++)
+        for(jj = 0; jj < CHUNK_NY; jj++)
+            if(direct_buf[ii][jj] != read_direct_buf[ii][jj]) {
+                HDprintf("    1. Read different values than written.");
+                HDprintf("    At index %d,%d\n", ii, jj);
+                HDprintf("    direct_buf=%d, read_direct_buf=%d\n", direct_buf[ii][jj], read_direct_buf[ii][jj]);
+                TEST_ERROR;
+            }
+
+    /* Get and verify the number of chunks written */
+    if(H5Dget_num_chunks(dset, H5S_ALL, &nchunks) < 0) TEST_ERROR
+    VERIFY(nchunks, ONE_CHUNK_WRITTEN, "H5Dget_num_chunks, number of chunks");
+
+    /* Get and verify info of the first and only chunk */
+    chk_index = 0;
+    offset[0] = CHUNK_NX;
+    offset[1] = CHUNK_NY;
+    if(verify_get_chunk_info(dset, H5S_ALL, chk_index, CHK_SIZE, offset, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info failed\n");
+
+    /* Get info of the chunk at the specified offsets and verify its info */
+    if(verify_get_chunk_info_by_coord(dset, offset, CHK_SIZE, flt_msk) == FAIL)
+        FAIL_PUTS_ERROR("Verification of H5Dget_chunk_info_by_coord failed\n");
+
+    /* Release resourse */
+    if(H5Dclose(dset) < 0) TEST_ERROR
+    if(H5Sclose(mem_space) < 0) TEST_ERROR
+    if(H5Sclose(dspace) < 0) TEST_ERROR
+    if(H5Pclose(cparms) < 0) TEST_ERROR
+    if(H5Pclose(dxpl) < 0) TEST_ERROR
+    if(H5Fclose(filter_file) < 0) TEST_ERROR
+
+    /* Remove the test file */
+    remove(filename);
+
+    PASSED();
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(dset);
+        H5Sclose(mem_space);
+        H5Sclose(dspace);
+        H5Pclose(cparms);
+        H5Pclose(dxpl);
+        H5Fclose(filter_file);
+    } H5E_END_TRY;
+
+    H5_FAILED();
+    return FAIL;
+} /* test_flt_msk_with_skip_compress() */
+
+/*-------------------------------------------------------------------------
+ * Function:    main
+ *
+ * Purpose:     Tests functions related to chunk information
+ *
+ * Return:      Success:    SUCCEED
+ *              Failure:    FAIL
+ *
+ * Programmer:  Binh-Minh Ribler
+ *              November 5, 2018
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+main(void)
+{
+    hid_t fapl = H5I_INVALID_HID;    /* File access property list */
+    int   nerrors = 0;  /* Number of errors so far */
+
+    h5_reset();
+
+    /* Create a copy of file access property list */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0) TEST_ERROR
+
+    /* Test basic operations on the chunk query functions */
+    nerrors += test_basic_query(fapl) < 0 ? 1 : 0;
+
+    /* Tests getting chunk information of version 1.8 and prior */
+    nerrors += test_get_chunk_info_highest_v18(fapl) < 0 ? 1 : 0;
+
+    /* Tests getting chunk information of version 1.10 */
+    nerrors += test_get_chunk_info_v110(fapl) < 0 ? 1 : 0;
+
+    /* Tests getting filter mask when compression filter is skipped */
+    nerrors += test_flt_msk_with_skip_compress(fapl) < 0 ? 1 : 0;
+
+    if(nerrors)
+        TEST_ERROR
+
+    HDprintf("All chunk query tests passed.\n");
+
+    h5_cleanup(FILENAME, fapl);
+
+    return SUCCEED;
+
+error:
+    nerrors = MAX(1, nerrors);
+    HDprintf("***** %d QUERY CHUNK INFO TEST%s FAILED! *****\n",
+              nerrors, 1 == nerrors ? "" : "S");
+    return FAIL;
+}
+
+/****************************************************************************
+ Additional tests to be added:
+- do the query when extending the dataset (shrink or expand)
+- verify that invalid input parameters are handled properly
+
+****************************************************************************/