[svn-r6387] Purpose:

    Bug Fix

Description:
    Metadata cache in parallel I/O can cause hangs in applications which
    perform independent I/O on chunked datasets, because the metadata cache
    can attempt to flush out dirty metadata from only a single process, instead
    of collectively from all processes.

Solution:
    Pass a dataset transfer property list down from every API function which
    could possibly trigger metadata I/O.

    Then, split the metadata cache into two sets of entries to allow dirty
    metadata to be set aside when a hash table collision occurs during
    independent I/O.

Platforms tested:
    Tested h5committest {arabica (fortran), eirene (fortran, C++)
        modi4 (parallel, fortran)}

    FreeBSD 4.7 (sleipnir) serial & parallel

Misc. update:
    Updated release_docs/RELEASE

1 files changed, 6 insertions, 6 deletions

diff --git a/test/istore.c b/test/istore.c
index 3dfb8cf..3f1e16e 100644
--- a/test/istore.c
+++ b/test/istore.c
@@ -101,7 +101,7 @@ new_object(H5F_t *f, const char *name, unsigned ndims, H5G_entry_t *ent/*out*/)
 
     /* Create the object header */
     HDmemset(ent,0,sizeof(H5G_entry_t));
-    if (H5O_create(f, 64, ent)) {
+    if (H5O_create(f, H5P_DATASET_XFER_DEFAULT, 64, ent)) {
 	H5_FAILED();
 	puts("    H5O_create() = NULL");
 	goto error;
@@ -118,15 +118,15 @@ new_object(H5F_t *f, const char *name, unsigned ndims, H5G_entry_t *ent/*out*/)
 	}
     }
     /* Create the root of the B-tree that describes chunked storage */
-    H5F_istore_create (f, &layout/*in,out*/);
-    if (H5O_modify(ent, H5O_LAYOUT, H5O_NEW_MESG, 0, 1, &layout) < 0) {
+    H5F_istore_create (f, H5P_DATASET_XFER_DEFAULT, &layout/*in,out*/);
+    if (H5O_modify(ent, H5O_LAYOUT, H5O_NEW_MESG, 0, 1, &layout, H5P_DATASET_XFER_DEFAULT) < 0) {
 	H5_FAILED();
 	puts("    H5O_modify istore message failure.");
 	goto error;
     }
 
     /* Give the object header a name */
-    if (H5G_insert(H5G_entof(H5G_rootof(f)), name, ent) < 0) {
+    if (H5G_insert(H5G_entof(H5G_rootof(f)), name, ent, H5P_DATASET_XFER_DEFAULT) < 0) {
 	H5_FAILED();
 	printf("    H5G_insert(f, name=\"%s\", ent) failed\n", name);
 	goto error;
@@ -247,7 +247,7 @@ test_extend(H5F_t *f, const char *prefix,
 	printf("    Cannot create %u-d object `%s'\n", ndims, name);
 	goto error;
     }
-    if (NULL == H5O_read(&handle, H5O_LAYOUT, 0, &layout)) {
+    if (NULL == H5O_read(&handle, H5O_LAYOUT, 0, &layout, H5P_DATASET_XFER_DEFAULT)) {
 	H5_FAILED();
 	puts("    Unable to read istore message.");
 	goto error;
@@ -456,7 +456,7 @@ test_sparse(H5F_t *f, const char *prefix, size_t nblocks,
 	printf("    Cannot create %u-d object `%s'\n", ndims, name);
 	goto error;
     }
-    if (NULL == H5O_read(&handle, H5O_LAYOUT, 0, &layout)) {
+    if (NULL == H5O_read(&handle, H5O_LAYOUT, 0, &layout, H5P_DATASET_XFER_DEFAULT)) {
 	H5_FAILED();
 	printf("    Unable to read istore message\n");
 	goto error;