bug8262 - ndb

  crash if scan is poped from queue before all attrinfo has arrived

ndb/src/kernel/blocks/dblqh/DblqhMain.cpp

@@ -8719,13 +8719,14 @@ void Dblqh::finishScanrec(Signal* signal)
     return;
   }
 
+  ndbrequire(restart.p->scanState == ScanRecord::IN_QUEUE);
+
   ScanRecordPtr tmpScan = scanptr;
   TcConnectionrecPtr tmpTc = tcConnectptr;
   
   tcConnectptr.i = restart.p->scanTcrec;
   ptrCheckGuard(tcConnectptr, ctcConnectrecFileSize, tcConnectionrec);
   restart.p->scanNumber = scanNumber;
-  restart.p->scanState = ScanRecord::WAIT_ACC_SCAN;
 
   queue.remove(restart);
   scans.add(restart);
@@ -8740,10 +8741,18 @@ void Dblqh::finishScanrec(Signal* signal)
     ndbout_c("adding-r (%d %d)", restart.p->scanNumber, restart.p->fragPtrI);
 #endif
   }
-  
-  scanptr = restart;
-  continueAfterReceivingAllAiLab(signal);  
-  
+
+  restart.p->scanState = ScanRecord::SCAN_FREE; // set in initScanRec
+  if(tcConnectptr.p->transactionState == TcConnectionrec::SCAN_STATE_USED)
+  {
+    jam();
+    scanptr = restart;
+    continueAfterReceivingAllAiLab(signal);  
+  }
+  else
+  {
+    ndbrequire(tcConnectptr.p->transactionState == TcConnectionrec::WAIT_SCAN_AI);
+  }
   scanptr = tmpScan;
   tcConnectptr = tmpTc;
 }//Dblqh::finishScanrec()

ndb/src/kernel/blocks/dbtc/DbtcMain.cpp

@@ -9028,6 +9028,8 @@ void Dbtc::execDIGETPRIMCONF(Signal* signal)
   scanFragptr.p->lqhBlockref = ref;
   scanFragptr.p->m_connectCount = getNodeInfo(tnodeid).m_connectCount;
   sendScanFragReq(signal, scanptr.p, scanFragptr.p);
+  if(ERROR_INSERTED(8035))
+    globalTransporterRegistry.performSend();
   attrbufptr.i = cachePtr.p->firstAttrbuf;
   while (attrbufptr.i != RNIL) {
     jam();
@@ -9037,6 +9039,8 @@ void Dbtc::execDIGETPRIMCONF(Signal* signal)
                  attrbufptr.p,
                  ref);
     attrbufptr.i = attrbufptr.p->attrbuf[ZINBUF_NEXT];
+    if(ERROR_INSERTED(8035))
+      globalTransporterRegistry.performSend();
   }//while
   scanFragptr.p->scanFragState = ScanFragRec::LQH_ACTIVE;
   scanFragptr.p->startFragTimer(ctcTimer);

ndb/test/ndbapi/testScan.cpp

@@ -35,7 +35,8 @@ getTable(Ndb* pNdb, int i){
 
 int runLoadTable(NDBT_Context* ctx, NDBT_Step* step){
   
-  int records = ctx->getNumRecords();
+  int records = ctx->getProperty("Rows", ctx->getNumRecords());
+
   HugoTransactions hugoTrans(*ctx->getTab());
   if (hugoTrans.loadTable(GETNDB(step), records) != 0){
     return NDBT_FAILED;
@@ -264,7 +265,7 @@ int runVerifyTable(NDBT_Context* ctx, NDBT_Step* step){
 
 int runScanRead(NDBT_Context* ctx, NDBT_Step* step){
   int loops = ctx->getNumLoops();
-  int records = ctx->getNumRecords();
+  int records = ctx->getProperty("Rows", ctx->getNumRecords());
   int parallelism = ctx->getProperty("Parallelism", 240);
   int abort = ctx->getProperty("AbortProb", 5);
 
@@ -375,7 +376,20 @@ int runScanReadError(NDBT_Context* ctx, NDBT_Step* step){
   restarter.insertErrorInAllNodes(0);
   return result;
 }
-		     
+
+int
+runInsertError(NDBT_Context* ctx, NDBT_Step* step){
+  int error = ctx->getProperty("ErrorCode");
+  NdbRestarter restarter;
+
+  ctx->setProperty("ErrorCode", (Uint32)0);
+  if (restarter.insertErrorInAllNodes(error) != 0){
+    ndbout << "Could not insert error in all nodes "<<endl;
+    return NDBT_FAILED;
+  }
+  return NDBT_OK;
+}     
+
 int runScanReadErrorOneNode(NDBT_Context* ctx, NDBT_Step* step){
   int result = NDBT_OK;
   int loops = ctx->getNumLoops();
@@ -1221,6 +1235,16 @@ TESTCASE("ScanRead100",
   STEPS(runScanRead, 100);
   FINALIZER(runClearTable);
 }
+TESTCASE("Scan-bug8262", 
+	 ""){
+  TC_PROPERTY("Rows", 1);
+  TC_PROPERTY("ErrorCode", 8035);
+  INITIALIZER(runLoadTable);
+  INITIALIZER(runInsertError); // Will reset error code
+  STEPS(runScanRead, 25);
+  FINALIZER(runInsertError);
+  FINALIZER(runClearTable);
+}
 TESTCASE("ScanRead40RandomTable", 
 	 "Verify scan requirement: Scan with 40 simultaneous threads. "\
 	 "Use random table for the scan"){

ndb/test/run-test/daily-basic-tests.txt

@@ -378,6 +378,10 @@ max-time: 500
 cmd: testScan
 args: -n ScanRestart T1
 
+max-time: 500
+cmd: testScan
+args: -l 100 -n Scan-bug8262 T7
+
 # OLD FLEX
 max-time: 500
 cmd: flexBench