=== modified file 'storage/ndb/src/ndbapi/NdbOperationSearch.cpp'
--- storage/ndb/src/ndbapi/NdbOperationSearch.cpp	2009-05-26 18:53:34 +0000
+++ storage/ndb/src/ndbapi/NdbOperationSearch.cpp	2009-11-24 17:49:02 +0000
@@ -473,7 +473,8 @@ NdbOperation::reorderKEYINFO()
 {
   Uint32 data[ NDB_MAX_KEYSIZE_IN_WORDS ];
   Uint32 size = NDB_MAX_KEYSIZE_IN_WORDS;
-  getKeyFromTCREQ(data, size);
+  int rc = getKeyFromTCREQ(data, size);
+  assert(rc == 0);
   Uint32 pos = 1;
   Uint32 k;
   for (k = 0; k < m_accessTable->m_noOfKeys; k++) {
@@ -505,7 +506,10 @@ NdbOperation::reorderKEYINFO()
 int
 NdbOperation::getKeyFromTCREQ(Uint32* data, Uint32 & size)
 {
-  assert(size >= theTupKeyLen && theTupKeyLen > 0);
+  /* Check that we can correctly return a valid key */
+  if ((size < theTupKeyLen) || (theTupKeyLen == 0))
+    return -1;
+  
   size = theTupKeyLen;
   unsigned pos = 0;
   while (pos < 8 && pos < size) {

=== modified file 'storage/ndb/test/ndbapi/testBlobs.cpp'
--- storage/ndb/test/ndbapi/testBlobs.cpp	2009-10-26 20:02:17 +0000
+++ storage/ndb/test/ndbapi/testBlobs.cpp	2009-11-24 17:44:47 +0000
@@ -3997,6 +3997,31 @@ bugtest_27370()
   return 0;
 }
 
+static int
+bugtest_48973()
+{
+  DBG("bug test 48973 - Assertion failed at NdbOperationSearch.cpp line 509");
+
+  /* Attempt to insert tuple with Blob column, without setting the key at all */
+  calcTups(true);
+  
+  Tup& tup = g_tups[0];
+  CHK((g_con = g_ndb->startTransaction()) != 0);
+  CHK((g_opr = g_con->getNdbOperation(g_opt.m_tname)) != 0);
+  CHK(g_opr->insertTuple() ==0);
+  CHK(getBlobHandles(g_opr) != 0);
+
+  /* 4264 == Invalid usage of Blob attribute */
+  CHK(g_con->getNdbError().code == 4264);
+  CHK(g_opr->getNdbError().code == 4264);
+
+  g_ndb->closeTransaction(g_con);
+
+  g_opr = 0;
+  g_con = 0;
+  return 0;
+}
+
 static struct {
   int m_bug;
   int (*m_test)();
@@ -4006,7 +4031,8 @@ static struct {
   { 27370, bugtest_27370 },
   { 36756, bugtest_36756 },
   { 45768, bugtest_45768 },
-  { 48040, bugtest_48040 }
+  { 48040, bugtest_48040 },
+  { 48973, bugtest_48973 }
 };
 
 NDB_COMMAND(testOdbcDriver, "testBlobs", "testBlobs", "testBlobs", 65535)

=== modified file 'storage/ndb/test/run-test/daily-basic-tests.txt'
--- storage/ndb/test/run-test/daily-basic-tests.txt	2009-10-26 20:02:17 +0000
+++ storage/ndb/test/run-test/daily-basic-tests.txt	2009-11-24 17:46:50 +0000
@@ -1378,3 +1378,7 @@ max-time: 300
 cmd: testBasic
 args: -n DDInsertFailUpdateBatch D1 D2
 
+max-time: 300
+cmd: testBlobs
+args: -skip hp -bug 48973
+