bk commit into 5.0 tree (pekka:1.2476) BUG#29102

[pekka]

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ChangeSet@stripped, 2007-08-29 21:45:53+03:00, pekka@stripped +1 -0
  ndb - bug#29102 : use locked read even for blob parts

  ndb/src/ndbapi/NdbBlob.cpp@stripped, 2007-08-29 21:43:41+03:00, pekka@stripped +6 -1
    race condition : s/committedRead/readTuple/ when reading parts since TUP commits tuples separately

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	pekka
# Host:	sama.ndb.mysql.com
# Root:	/export/space/pekka/ndb/version/my50-bug29102

--- 1.35/ndb/src/ndbapi/NdbBlob.cpp	2007-04-25 21:57:01 +03:00
+++ 1.36/ndb/src/ndbapi/NdbBlob.cpp	2007-08-29 21:43:41 +03:00
@@ -892,7 +892,12 @@
   while (n < count) {
     NdbOperation* tOp = theNdbCon->getNdbOperation(theBlobTable);
     if (tOp == NULL ||
-        tOp->committedRead() == -1 ||
+        /*
+         * This was committedRead() before.  However lock on main
+         * table tuple does not fully protect blob parts since DBTUP
+         * commits each tuple separately.
+         */
+        tOp->readTuple() == -1 ||
         setPartKeyValue(tOp, part + n) == -1 ||
         tOp->getValue((Uint32)3, buf) == NULL) {
       setErrorCode(tOp);