bk commit into 4.1 tree (tomas:1.2512) BUG#19202

[tomas]

Below is the list of changes that have just been committed into a local
4.1 repository of tomas. When tomas does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet
  1.2512 06/06/29 20:55:21 tomas@stripped +1 -0
  Bug #19202 Incorrect errorhandling in select count(*) wrt temporary error

  sql/ha_ndbcluster.cc
    1.188 06/06/29 20:55:14 tomas@stripped +59 -24
    Bug #19202 Incorrect errorhandling in select count(*) wrt temporary error

# 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:	tomas
# Host:	poseidon.ndb.mysql.com
# Root:	/home/tomas/mysql-4.1-main

--- 1.187/sql/ha_ndbcluster.cc	2006-06-14 20:22:38 +02:00
+++ 1.188/sql/ha_ndbcluster.cc	2006-06-29 20:55:14 +02:00
@@ -270,6 +270,7 @@
   {
     Ndb *ndb= get_ndb();
     Uint64 rows;
+    ndb->setDatabaseName(m_dbname);
     if(ndb_get_table_statistics(ndb, m_tabname, &rows, 0) == 0){
       info->records= rows;
     }
@@ -2876,6 +2877,7 @@
         DBUG_VOID_RETURN;
       Ndb *ndb= get_ndb();
       Uint64 rows= 100;
+      ndb->setDatabaseName(m_dbname);
       if (current_thd->variables.ndb_use_exact_count)
 	ndb_get_table_statistics(ndb, m_tabname, &rows, 0);
       records= rows;
@@ -5228,34 +5230,53 @@
 {
   DBUG_ENTER("ndb_get_table_statistics");
   DBUG_PRINT("enter", ("table: %s", table));
-  NdbConnection* pTrans= ndb->startTransaction();
-  do 
+  NdbConnection* pTrans;
+  NdbError error;
+  int retries= 10;
+  int retry_sleep= 30 * 1000; /* 30 milliseconds */
+
+  do
   {
-    if (pTrans == NULL)
-      break;
+    Uint64 rows, commits;
+    Uint64 sum_rows= 0;
+    Uint64 sum_commits= 0;
+    NdbScanOperation*pOp;
+    NdbResultSet *rs;
+    int check;
+
+    if ((pTrans= ndb->startTransaction()) == NULL)
+    {
+      error= ndb->getNdbError();
+      goto retry;
+    }
       
-    NdbScanOperation* pOp= pTrans->getNdbScanOperation(table);
-    if (pOp == NULL)
-      break;
+    if ((pOp= pTrans->getNdbScanOperation(table)) == NULL)
+    {
+      error= pTrans->getNdbError();
+      goto retry;
+    }
     
-    NdbResultSet* rs= pOp->readTuples(NdbOperation::LM_CommittedRead); 
-    if (rs == 0)
-      break;
+    if ((rs= pOp->readTuples(NdbOperation::LM_CommittedRead)) == 0)
+    {
+      error= pOp->getNdbError();
+      goto retry;
+    }
     
-    int check= pOp->interpret_exit_last_row();
-    if (check == -1)
-      break;
+    if (pOp->interpret_exit_last_row() == -1)
+    {
+      error= pOp->getNdbError();
+      goto retry;
+    }
     
-    Uint64 rows, commits;
     pOp->getValue(NdbDictionary::Column::ROW_COUNT, (char*)&rows);
     pOp->getValue(NdbDictionary::Column::COMMIT_COUNT, (char*)&commits);
     
-    check= pTrans->execute(NoCommit, AbortOnError, TRUE);
-    if (check == -1)
-      break;
+    if (pTrans->execute(NoCommit, AbortOnError, TRUE) == -1)
+    {
+      error= pTrans->getNdbError();
+      goto retry;
+    }
     
-    Uint64 sum_rows= 0;
-    Uint64 sum_commits= 0;
     while((check= rs->nextResult(TRUE, TRUE)) == 0)
     {
       sum_rows+= rows;
@@ -5263,7 +5284,10 @@
     }
     
     if (check == -1)
-      break;
+    {
+      error= pOp->getNdbError();
+      goto retry;
+    }
 
     rs->close(TRUE);
 
@@ -5274,11 +5298,22 @@
       * commit_count= sum_commits;
     DBUG_PRINT("exit", ("records: %u commits: %u", sum_rows, sum_commits));
     DBUG_RETURN(0);
-  } while(0);
 
-  ndb->closeTransaction(pTrans);
-  DBUG_PRINT("exit", ("failed"));
-  DBUG_RETURN(-1);
+retry:
+    if (pTrans)
+    {
+      ndb->closeTransaction(pTrans);
+      pTrans= NULL;
+    }
+    if (error.status == NdbError::TemporaryError && retries--)
+    {
+      my_sleep(retry_sleep);
+      continue;
+    }
+    break;
+  } while(1);
+  DBUG_PRINT("exit", ("failed, error %u(%s)", error.code, error.message));
+  ERR_RETURN(error);
 }
 
 /*