ndb - bug#20442

  force close of scan (of outstanding scan_frag)


ndb/src/ndbapi/NdbScanOperation.cpp:
  Force close of scan in when not doing committed read scan

ndb/src/ndbapi/NdbScanOperation.cpp

@@ -1503,6 +1503,66 @@ NdbScanOperation::close_impl(TransporterFacade* tp, bool forceSend){
     return -1;
   }
   
+  bool holdLock = false;
+  if (theSCAN_TABREQ)
+  {
+    ScanTabReq * req = CAST_PTR(ScanTabReq, theSCAN_TABREQ->getDataPtrSend());
+    holdLock = ScanTabReq::getHoldLockFlag(req->requestInfo);
+  }
+
+  /**
+   * When using locks, force close of scan directly
+   */
+  if (holdLock && theError.code == 0 && 
+      (m_sent_receivers_count + m_conf_receivers_count + m_api_receivers_count))
+  {
+    TransporterFacade * tp = TransporterFacade::instance();
+    NdbApiSignal tSignal(theNdb->theMyRef);
+    tSignal.setSignal(GSN_SCAN_NEXTREQ);
+    
+    Uint32* theData = tSignal.getDataPtrSend();
+    Uint64 transId = theNdbCon->theTransactionId;
+    theData[0] = theNdbCon->theTCConPtr;
+    theData[1] = 1;
+    theData[2] = transId;
+    theData[3] = (Uint32) (transId >> 32);
+
+    tSignal.setLength(4);
+    int ret = tp->sendSignal(&tSignal, nodeId);
+    if (ret)
+    {
+      setErrorCode(4008);
+      return -1;
+    }
+    checkForceSend(forceSend);
+
+    /**
+     * If no receiver is outstanding...
+     *   set it to 1 as execCLOSE_SCAN_REP resets it
+     */
+    m_sent_receivers_count = m_sent_receivers_count ? m_sent_receivers_count : 1;
+    
+    while(theError.code == 0 && (m_sent_receivers_count + m_conf_receivers_count))
+    {
+      theNdb->theImpl->theWaiter.m_node = nodeId;
+      theNdb->theImpl->theWaiter.m_state = WAIT_SCAN;
+      int return_code = theNdb->receiveResponse(WAITFOR_SCAN_TIMEOUT);
+      switch(return_code){
+      case 0:
+	break;
+      case -1:
+	setErrorCode(4008);
+      case -2:
+	m_api_receivers_count = 0;
+	m_conf_receivers_count = 0;
+	m_sent_receivers_count = 0;
+	theNdbCon->theReleaseOnClose = true;
+	return -1;
+      }
+    }
+    return 0;
+  }
+  
   /**
    * Wait for outstanding
    */