1 files changed, 34 insertions, 16 deletions

diff --git a/ndb/src/ndbapi/NdbScanOperation.cpp b/ndb/src/ndbapi/NdbScanOperation.cpp
index 4b10ebb10cd..33fa826e470 100644
--- a/ndb/src/ndbapi/NdbScanOperation.cpp
+++ b/ndb/src/ndbapi/NdbScanOperation.cpp
@@ -447,10 +447,11 @@ NdbScanOperation::executeCursor(int nodeId){
 
 #define DEBUG_NEXT_RESULT 0
 
-int NdbScanOperation::nextResult(bool fetchAllowed)
+int NdbScanOperation::nextResult(bool fetchAllowed, bool forceSend)
 {
   if(m_ordered)
-    return ((NdbIndexScanOperation*)this)->next_result_ordered(fetchAllowed);
+    return ((NdbIndexScanOperation*)this)->next_result_ordered(fetchAllowed,
+							       forceSend);
   
   /**
    * Check current receiver
@@ -487,7 +488,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
   TransporterFacade* tp = TransporterFacade::instance();
   Guard guard(tp->theMutexPtr);
   Uint32 seq = theNdbCon->theNodeSequence;
-  if(seq == tp->getNodeSequence(nodeId) && send_next_scan(idx, false) == 0){
+  if(seq == tp->getNodeSequence(nodeId) && send_next_scan(idx, false,
+							  forceSend) == 0){
       
     idx = m_current_api_receiver;
     last = m_api_receivers_count;
@@ -578,7 +580,8 @@ int NdbScanOperation::nextResult(bool fetchAllowed)
 }
 
 int
-NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){  
+NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag,
+				 bool forceSend){  
   if(cnt > 0 || stopScanFlag){
     NdbApiSignal tSignal(theNdb->theMyRef);
     tSignal.setSignal(GSN_SCAN_NEXTREQ);
@@ -618,6 +621,8 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){
       ret = tp->sendSignal(&tSignal, nodeId);
     }
 
+    if (!ret) checkForceSend(forceSend);
+
     m_sent_receivers_count = last + cnt + stopScanFlag;
     m_api_receivers_count -= cnt;
     m_current_api_receiver = 0;
@@ -627,6 +632,15 @@ NdbScanOperation::send_next_scan(Uint32 cnt, bool stopScanFlag){
   return 0;
 }
 
+void NdbScanOperation::checkForceSend(bool forceSend)
+{
+  if (forceSend) {
+    TransporterFacade::instance()->forceSend(theNdb->theNdbBlockNumber);
+  } else {
+    TransporterFacade::instance()->checkForceSend(theNdb->theNdbBlockNumber);
+  }//if
+}
+
 int 
 NdbScanOperation::prepareSend(Uint32  TC_ConnectPtr, Uint64  TransactionId)
 {
@@ -642,7 +656,7 @@ NdbScanOperation::doSend(int ProcessorId)
   return 0;
 }
 
-void NdbScanOperation::closeScan()
+void NdbScanOperation::closeScan(bool forceSend)
 {
   if(m_transConnection){
     if(DEBUG_NEXT_RESULT)
@@ -657,7 +671,7 @@ void NdbScanOperation::closeScan()
     
     TransporterFacade* tp = TransporterFacade::instance();
     Guard guard(tp->theMutexPtr);
-    close_impl(tp);
+    close_impl(tp, forceSend);
     
   } while(0);
   
@@ -1293,7 +1307,8 @@ NdbIndexScanOperation::compare(Uint32 skip, Uint32 cols,
 }
 
 int
-NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
+NdbIndexScanOperation::next_result_ordered(bool fetchAllowed,
+					   bool forceSend){
   
   Uint32 u_idx = 0, u_last = 0;
   Uint32 s_idx   = m_current_api_receiver; // first sorted
@@ -1319,7 +1334,8 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
       Guard guard(tp->theMutexPtr);
       Uint32 seq = theNdbCon->theNodeSequence;
       Uint32 nodeId = theNdbCon->theDBnode;
-      if(seq == tp->getNodeSequence(nodeId) && !send_next_scan_ordered(s_idx)){
+      if(seq == tp->getNodeSequence(nodeId) &&
+	 !send_next_scan_ordered(s_idx, forceSend)){
 	Uint32 tmp = m_sent_receivers_count;
 	s_idx = m_current_api_receiver; 
 	while(m_sent_receivers_count > 0 && !theError.code){
@@ -1408,7 +1424,7 @@ NdbIndexScanOperation::next_result_ordered(bool fetchAllowed){
 }
 
 int
-NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx){  
+NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx, bool forceSend){  
   if(idx == theParallelism)
     return 0;
   
@@ -1440,11 +1456,13 @@ NdbIndexScanOperation::send_next_scan_ordered(Uint32 idx){
   Uint32 nodeId = theNdbCon->theDBnode;
   TransporterFacade * tp = TransporterFacade::instance();
   tSignal.setLength(4+1);
-  return tp->sendSignal(&tSignal, nodeId);
+  int ret= tp->sendSignal(&tSignal, nodeId);
+  if (!ret) checkForceSend(forceSend);
+  return ret;
 }
 
 int
-NdbScanOperation::close_impl(TransporterFacade* tp){
+NdbScanOperation::close_impl(TransporterFacade* tp, bool forceSend){
   Uint32 seq = theNdbCon->theNodeSequence;
   Uint32 nodeId = theNdbCon->theDBnode;
   
@@ -1473,7 +1491,7 @@ NdbScanOperation::close_impl(TransporterFacade* tp){
 
   if(m_api_receivers_count+m_conf_receivers_count){
     // Send close scan
-    if(send_next_scan(0, true) == -1){ // Close scan
+    if(send_next_scan(0, true, forceSend) == -1){ // Close scan
       theNdbCon->theReleaseOnClose = true;
       return -1;
     }
@@ -1520,7 +1538,7 @@ NdbScanOperation::reset_receivers(Uint32 parallell, Uint32 ordered){
 }
 
 int
-NdbScanOperation::restart()
+NdbScanOperation::restart(bool forceSend)
 {
   
   TransporterFacade* tp = TransporterFacade::instance();
@@ -1529,7 +1547,7 @@ NdbScanOperation::restart()
   
   {
     int res;
-    if((res= close_impl(tp)))
+    if((res= close_impl(tp, forceSend)))
     {
       return res;
     }
@@ -1548,13 +1566,13 @@ NdbScanOperation::restart()
 }
 
 int
-NdbIndexScanOperation::reset_bounds(){
+NdbIndexScanOperation::reset_bounds(bool forceSend){
   int res;
   
   {
     TransporterFacade* tp = TransporterFacade::instance();
     Guard guard(tp->theMutexPtr);
-    res= close_impl(tp);
+    res= close_impl(tp, forceSend);
   }
 
   if(!res)