[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, 8 insertions, 9 deletions

diff --git a/tools/misc/h5debug.c b/tools/misc/h5debug.c
index 1f606fb..09b8c7f 100644
--- a/tools/misc/h5debug.c
+++ b/tools/misc/h5debug.c
@@ -104,25 +104,25 @@ main(int argc, char *argv[])
         /*
          * Debug the boot block.
          */
-        status = H5F_debug(f, addr, stdout, 0, VCOL);
+        status = H5F_debug(f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL);
 
     } else if (!HDmemcmp(sig, H5HL_MAGIC, H5HL_SIZEOF_MAGIC)) {
         /*
          * Debug a local heap.
          */
-        status = H5HL_debug(f, addr, stdout, 0, VCOL);
+        status = H5HL_debug(f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL);
 	
     } else if (!HDmemcmp (sig, H5HG_MAGIC, H5HG_SIZEOF_MAGIC)) {
 	/*
 	 * Debug a global heap collection.
 	 */
-	status = H5HG_debug (f, addr, stdout, 0, VCOL);
+	status = H5HG_debug (f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL);
 
     } else if (!HDmemcmp(sig, H5G_NODE_MAGIC, H5G_NODE_SIZEOF_MAGIC)) {
         /*
          * Debug a symbol table node.
          */
-        status = H5G_node_debug(f, addr, stdout, 0, VCOL, extra);
+        status = H5G_node_debug(f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL, extra);
 
     } else if (!HDmemcmp(sig, H5B_MAGIC, H5B_SIZEOF_MAGIC)) {
         /*
@@ -134,17 +134,16 @@ main(int argc, char *argv[])
 	
         switch (subtype) {
         case H5B_SNODE_ID:
-            status = H5G_node_debug(f, addr, stdout, 0, VCOL, extra);
+            status = H5G_node_debug(f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL, extra);
             break;
 
 	case H5B_ISTORE_ID:
 	    ndims = (int)extra;
-	    status = H5F_istore_debug (f, addr, stdout, 0, VCOL, ndims);
+	    status = H5F_istore_debug (f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL, ndims);
 	    break;
 
         default:
-            fprintf(stderr, "Unknown B-tree subtype %u\n",
-		    (unsigned)(subtype));
+            fprintf(stderr, "Unknown B-tree subtype %u\n", (unsigned)(subtype));
             HDexit(4);
         }
 
@@ -153,7 +152,7 @@ main(int argc, char *argv[])
          * This could be an object header.  Since they don't have a signature
          * it's a somewhat "ify" detection.
          */
-        status = H5O_debug(f, addr, stdout, 0, VCOL);
+        status = H5O_debug(f, H5P_DATASET_XFER_DEFAULT, addr, stdout, 0, VCOL);
 
     } else {
         /*