WL#2347 - Load independent heartbeats

Reset missed heartbeat count on receipt of signal from node.

This fixes a bug where that under high network load, the heartbeat packets could be
delayed, causing the appearance of node failure (due to lost heartbeats).


ndb/include/kernel/NodeInfo.hpp:
  Add m_heartbeat_cnt to track missed heartbeats
ndb/include/transporter/TransporterCallback.hpp:
  add prototype for transporter_recv_from()
  
  Called on receipt from a node.
ndb/src/common/transporter/TransporterRegistry.cpp:
  Add calls to transporter_receive_from when data is received (before unpack)
ndb/src/kernel/blocks/qmgr/Qmgr.hpp:
  remove NodeRec::alarmCount. missed heartbeat count now kept in NodeInfo
ndb/src/kernel/blocks/qmgr/QmgrMain.cpp:
  Use NodeInfo::m_heartbeat_cnt for missed heartbeat count
ndb/src/kernel/vm/TransporterCallback.cpp:
  add transporter_recv_from(), which is called on receipt of signals.
  It resets missed heartbeat count for that node.
ndb/src/ndbapi/ClusterMgr.cpp:
  Use NodeInfo::m_heartbeat_cnt for missed heartbeat count
ndb/src/ndbapi/ClusterMgr.hpp:
  Use NodeInfo::m_heartbeat_cnt instead of ClusterMgr::Node::hbSent for missed
  heartbeat count.
  
  We now use the same storage for API and Kernel heartbeats.
  
  Add ClusterMgr::hb_received(nodeId) to reset hbSent (as if we received a heartbeat,
  but callable from elsewhere - e.g. when signal received)
ndb/src/ndbapi/TransporterFacade.cpp:
  Implement transporter_recv_from for ndbapi - which resets hbSent
ndb/src/ndbapi/TransporterFacade.hpp:
  Add hb_received(nodeId)

ndb/include/kernel/NodeInfo.hpp

@@ -41,6 +41,7 @@ public:
   Uint32 m_type;          ///< Node type
   Uint32 m_connectCount;  ///< No of times connected
   bool   m_connected;     ///< Node is connected
+  Uint32 m_heartbeat_cnt; ///< Missed heartbeats
   
   friend NdbOut & operator<<(NdbOut&, const NodeInfo&); 
 };
@@ -52,6 +53,7 @@ NodeInfo::NodeInfo(){
   m_signalVersion = 0;
   m_type = INVALID;
   m_connectCount = 0;
+  m_heartbeat_cnt= 0;
 }
 
 inline

ndb/include/transporter/TransporterCallback.hpp

@@ -341,5 +341,8 @@ enum TransporterError {
  */ 
 void 
 reportError(void * callbackObj, NodeId nodeId, TransporterError errorCode); 
+
+void
+transporter_recv_from(void* callbackObj, NodeId node);
  
 #endif   

ndb/src/common/transporter/TransporterRegistry.cpp

@@ -918,6 +918,7 @@ TransporterRegistry::performReceive()
       NodeId remoteNodeId;
       Uint32 * readPtr;
       Uint32 sz = theOSEReceiver->getReceiveData(&remoteNodeId, &readPtr);
+      transporter_recv_from(callbackObj, remoteNodeId);
       Uint32 szUsed = unpack(readPtr,
 			     sz,
 			     remoteNodeId,
@@ -953,6 +954,7 @@ TransporterRegistry::performReceive()
 	  {
 	    Uint32 * ptr;
 	    Uint32 sz = t->getReceiveData(&ptr);
+	    transporter_recv_from(callbackObj, nodeId);
 	    Uint32 szUsed = unpack(ptr, sz, nodeId, ioStates[nodeId]);
 	    t->updateReceiveDataPtr(szUsed);
           }
@@ -976,6 +978,7 @@ TransporterRegistry::performReceive()
       {
 	Uint32 * readPtr, * eodPtr;
 	t->getReceivePtr(&readPtr, &eodPtr);
+	transporter_recv_from(callbackObj, nodeId);
 	Uint32 *newPtr = unpack(readPtr, eodPtr, nodeId, ioStates[nodeId]);
 	t->updateReceivePtr(newPtr);
       }
@@ -993,6 +996,7 @@ TransporterRegistry::performReceive()
       {
 	Uint32 * readPtr, * eodPtr;
 	t->getReceivePtr(&readPtr, &eodPtr);
+	transporter_recv_from(callbackObj, nodeId);
 	Uint32 *newPtr = unpack(readPtr, eodPtr, nodeId, ioStates[nodeId]);
 	t->updateReceivePtr(newPtr);
       }

ndb/src/kernel/blocks/qmgr/Qmgr.hpp

@@ -118,8 +118,7 @@ public:
   struct NodeRec {
     UintR ndynamicId;
     Phase phase;
-    UintR alarmCount;
-    
+
     QmgrState sendPrepFailReqStatus;
     QmgrState sendCommitFailReqStatus;
     QmgrState sendPresToStatus;

ndb/src/kernel/blocks/qmgr/QmgrMain.cpp

@@ -66,7 +66,7 @@ void Qmgr::execCM_HEARTBEAT(Signal* signal)
   jamEntry();
   hbNodePtr.i = signal->theData[0];
   ptrCheckGuard(hbNodePtr, MAX_NDB_NODES, nodeRec);
-  hbNodePtr.p->alarmCount = 0;
+  setNodeInfo(hbNodePtr.i).m_heartbeat_cnt= 0;
   return;
 }//Qmgr::execCM_HEARTBEAT()
 
@@ -1040,7 +1040,7 @@ void Qmgr::execCM_ADD(Signal* signal)
     jam();
     ndbrequire(addNodePtr.p->phase == ZSTARTING);
     addNodePtr.p->phase = ZRUNNING;
-    addNodePtr.p->alarmCount = 0;
+    setNodeInfo(addNodePtr.i).m_heartbeat_cnt= 0;
     c_clusterNodes.set(addNodePtr.i);
     findNeighbours(signal);
 
@@ -1078,7 +1078,7 @@ Qmgr::joinedCluster(Signal* signal, NodeRecPtr nodePtr){
    * NODES IN THE CLUSTER.
    */
   nodePtr.p->phase = ZRUNNING;
-  nodePtr.p->alarmCount = 0;
+  setNodeInfo(nodePtr.i).m_heartbeat_cnt= 0;
   findNeighbours(signal);
   c_clusterNodes.set(nodePtr.i);
   c_start.reset();
@@ -1299,7 +1299,7 @@ void Qmgr::findNeighbours(Signal* signal)
        *---------------------------------------------------------------------*/
       fnNodePtr.i = cneighbourl;
       ptrCheckGuard(fnNodePtr, MAX_NDB_NODES, nodeRec);
-      fnNodePtr.p->alarmCount = 0;
+      setNodeInfo(fnNodePtr.i).m_heartbeat_cnt= 0;
     }//if
   }//if
 
@@ -1347,8 +1347,8 @@ void Qmgr::initData(Signal* signal)
     } else {
       nodePtr.p->phase = ZAPI_INACTIVE;
     }
-    
-    nodePtr.p->alarmCount = 0;
+
+    setNodeInfo(nodePtr.i).m_heartbeat_cnt= 0;
     nodePtr.p->sendPrepFailReqStatus = Q_NOT_ACTIVE;
     nodePtr.p->sendCommitFailReqStatus = Q_NOT_ACTIVE;
     nodePtr.p->sendPresToStatus = Q_NOT_ACTIVE;
@@ -1550,18 +1550,18 @@ void Qmgr::checkHeartbeat(Signal* signal)
   }//if
   ptrCheckGuard(nodePtr, MAX_NDB_NODES, nodeRec);
   
-  nodePtr.p->alarmCount ++;
+  setNodeInfo(nodePtr.i).m_heartbeat_cnt++;
   ndbrequire(nodePtr.p->phase == ZRUNNING);
   ndbrequire(getNodeInfo(nodePtr.i).m_type == NodeInfo::DB);
 
-  if(nodePtr.p->alarmCount > 2){
+  if(getNodeInfo(nodePtr.i).m_heartbeat_cnt > 2){
     signal->theData[0] = NDB_LE_MissedHeartbeat;
     signal->theData[1] = nodePtr.i;
-    signal->theData[2] = nodePtr.p->alarmCount - 1;
+    signal->theData[2] = getNodeInfo(nodePtr.i).m_heartbeat_cnt - 1;
     sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 3, JBB);
   }
 
-  if (nodePtr.p->alarmCount > 4) {
+  if (getNodeInfo(nodePtr.i).m_heartbeat_cnt > 4) {
     jam();
     /**----------------------------------------------------------------------
      * OUR LEFT NEIGHBOUR HAVE KEPT QUIET FOR THREE CONSECUTIVE HEARTBEAT 
@@ -1593,16 +1593,16 @@ void Qmgr::apiHbHandlingLab(Signal* signal)
 
     if (TnodePtr.p->phase == ZAPI_ACTIVE){
       jam();
-      TnodePtr.p->alarmCount ++;
+      setNodeInfo(TnodePtr.i).m_heartbeat_cnt++;
       
-      if(TnodePtr.p->alarmCount > 2){
+      if(getNodeInfo(TnodePtr.i).m_heartbeat_cnt > 2){
 	signal->theData[0] = NDB_LE_MissedHeartbeat;
 	signal->theData[1] = nodeId;
-	signal->theData[2] = TnodePtr.p->alarmCount - 1;
+	signal->theData[2] = getNodeInfo(TnodePtr.i).m_heartbeat_cnt - 1;
 	sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 3, JBB);
       }
       
-      if (TnodePtr.p->alarmCount > 4) {
+      if (getNodeInfo(TnodePtr.i).m_heartbeat_cnt > 4) {
         jam();
 	/*------------------------------------------------------------------*/
 	/* THE API NODE HAS NOT SENT ANY HEARTBEAT FOR THREE SECONDS. 
@@ -1634,16 +1634,17 @@ void Qmgr::checkStartInterface(Signal* signal)
     ptrAss(nodePtr, nodeRec);
     if (nodePtr.p->phase == ZFAIL_CLOSING) {
       jam();
-      nodePtr.p->alarmCount = nodePtr.p->alarmCount + 1;
+      setNodeInfo(nodePtr.i).m_heartbeat_cnt++;
       if (c_connectedNodes.get(nodePtr.i)){
         jam();
 	/*-------------------------------------------------------------------*/
 	// We need to ensure that the connection is not restored until it has 
 	// been disconnected for at least three seconds.
 	/*-------------------------------------------------------------------*/
-        nodePtr.p->alarmCount = 0;
+        setNodeInfo(nodePtr.i).m_heartbeat_cnt= 0;
       }//if
-      if ((nodePtr.p->alarmCount > 3) && (nodePtr.p->failState == NORMAL)) {
+      if ((getNodeInfo(nodePtr.i).m_heartbeat_cnt > 3)
+	  && (nodePtr.p->failState == NORMAL)) {
 	/**------------------------------------------------------------------
 	 * WE HAVE DISCONNECTED THREE SECONDS AGO. WE ARE NOW READY TO 
 	 * CONNECT AGAIN AND ACCEPT NEW REGISTRATIONS FROM THIS NODE. 
@@ -1659,18 +1660,18 @@ void Qmgr::checkStartInterface(Signal* signal)
           nodePtr.p->phase = ZINIT;
         }//if
 
-        nodePtr.p->alarmCount = 0;
+        setNodeInfo(nodePtr.i).m_heartbeat_cnt= 0;
         signal->theData[0] = 0;
         signal->theData[1] = nodePtr.i;
         sendSignal(CMVMI_REF, GSN_OPEN_COMREQ, signal, 2, JBA);
       } else {
-	if(((nodePtr.p->alarmCount + 1) % 60) == 0){
+	if(((getNodeInfo(nodePtr.i).m_heartbeat_cnt + 1) % 60) == 0){
 	  char buf[100];
 	  BaseString::snprintf(buf, sizeof(buf), 
 		   "Failure handling of node %d has not completed in %d min."
 		   " - state = %d",
 		   nodePtr.i, 
-		   (nodePtr.p->alarmCount + 1)/60,
+		   (getNodeInfo(nodePtr.i).m_heartbeat_cnt + 1)/60,
 		   nodePtr.p->failState);
 	  warningEvent(buf);
 	}
@@ -1718,7 +1719,7 @@ void Qmgr::sendApiFailReq(Signal* signal, Uint16 failedNodeNo)
    * WE ONLY NEED TO SET PARAMETERS TO ENABLE A NEW CONNECTION IN A FEW 
    * SECONDS. 
    *-------------------------------------------------------------------------*/
-  failedNodePtr.p->alarmCount = 0;
+  setNodeInfo(failedNodePtr.i).m_heartbeat_cnt= 0;
 
   CloseComReqConf * const closeCom = (CloseComReqConf *)&signal->theData[0];
 
@@ -1871,7 +1872,7 @@ void Qmgr::node_failed(Signal* signal, Uint16 aFailedNode)
       /*---------------------------------------------------------------------*/
       failedNodePtr.p->failState = NORMAL;
       failedNodePtr.p->phase = ZFAIL_CLOSING;
-      failedNodePtr.p->alarmCount = 0;
+      setNodeInfo(failedNodePtr.i).m_heartbeat_cnt= 0;
 
       CloseComReqConf * const closeCom = 
 	(CloseComReqConf *)&signal->theData[0];
@@ -1965,8 +1966,8 @@ void Qmgr::execAPI_REGREQ(Signal* signal)
   }
 
   setNodeInfo(apiNodePtr.i).m_version = version;
-   
-  apiNodePtr.p->alarmCount = 0;
+
+  setNodeInfo(apiNodePtr.i).m_heartbeat_cnt= 0;
 
   ApiRegConf * const apiRegConf = (ApiRegConf *)&signal->theData[0];
   apiRegConf->qmgrRef = reference();
@@ -2484,7 +2485,7 @@ void Qmgr::execCOMMIT_FAILREQ(Signal* signal)
       ptrCheckGuard(nodePtr, MAX_NDB_NODES, nodeRec);
       nodePtr.p->phase = ZFAIL_CLOSING;
       nodePtr.p->failState = WAITING_FOR_NDB_FAILCONF;
-      nodePtr.p->alarmCount = 0;
+      setNodeInfo(nodePtr.i).m_heartbeat_cnt= 0;
       c_clusterNodes.clear(nodePtr.i);
     }//for
     /*----------------------------------------------------------------------*/
@@ -2742,7 +2743,7 @@ void Qmgr::failReport(Signal* signal,
     failedNodePtr.p->sendPrepFailReqStatus = Q_NOT_ACTIVE;
     failedNodePtr.p->sendCommitFailReqStatus = Q_NOT_ACTIVE;
     failedNodePtr.p->sendPresToStatus = Q_NOT_ACTIVE;
-    failedNodePtr.p->alarmCount = 0;
+    setNodeInfo(failedNodePtr.i).m_heartbeat_cnt= 0;
     if (aSendFailRep == ZTRUE) {
       jam();
       if (failedNodePtr.i != getOwnNodeId()) {

ndb/src/kernel/vm/TransporterCallback.cpp

@@ -33,6 +33,7 @@
 #include <NdbOut.hpp>
 #include "DataBuffer.hpp"
 
+
 /**
  * The instance
  */
@@ -452,3 +453,8 @@ SignalLoggerManager::printSegmentedSection(FILE * output,
     putc('\n', output);
 }
 
+void
+transporter_recv_from(void * callbackObj, NodeId nodeId){
+  globalData.m_nodeInfo[nodeId].m_heartbeat_cnt= 0;
+  return;
+}

ndb/src/ndbapi/ClusterMgr.cpp

@@ -214,7 +214,7 @@ ClusterMgr::threadMain( ){
 	 * It is now time to send a new Heartbeat
 	 */
 	if (theNode.hbCounter >= theNode.hbFrequency) {
-	  theNode.hbSent++;
+	  theNode.m_info.m_heartbeat_cnt++;
 	  theNode.hbCounter = 0;
 	}
 
@@ -231,7 +231,7 @@ ClusterMgr::threadMain( ){
 	theFacade.sendSignalUnCond(&signal, nodeId);
       }//if
       
-      if (theNode.hbSent == 4 && theNode.hbFrequency > 0){
+      if (theNode.m_info.m_heartbeat_cnt == 4 && theNode.hbFrequency > 0){
 	reportNodeFailed(i);
       }//if
     }
@@ -337,7 +337,7 @@ ClusterMgr::execAPI_REGCONF(const Uint32 * theData){
       node.compatible = ndbCompatible_api_ndb(NDB_VERSION,
 					      node.m_info.m_version);
   }
-  
+
   node.m_state = apiRegConf->nodeState;
   if (node.compatible && (node.m_state.startLevel == NodeState::SL_STARTED  ||
 			  node.m_state.startLevel == NodeState::SL_SINGLEUSER)){
@@ -345,7 +345,7 @@ ClusterMgr::execAPI_REGCONF(const Uint32 * theData){
   } else {
     set_node_alive(node, false);
   }//if
-  node.hbSent = 0;
+  node.m_info.m_heartbeat_cnt = 0;
   node.hbCounter = 0;
   if (node.m_info.m_type != NodeInfo::REP) {
     node.hbFrequency = (apiRegConf->apiHeartbeatFrequency * 10) - 50;
@@ -414,7 +414,7 @@ ClusterMgr::reportConnected(NodeId nodeId){
 
   Node & theNode = theNodes[nodeId];
   theNode.connected = true;
-  theNode.hbSent = 0;
+  theNode.m_info.m_heartbeat_cnt = 0;
   theNode.hbCounter = 0;
 
   /**

ndb/src/ndbapi/ClusterMgr.hpp

@@ -73,12 +73,12 @@ public:
      */
     Uint32 hbFrequency; // Heartbeat frequence 
     Uint32 hbCounter;   // # milliseconds passed since last hb sent
-    Uint32 hbSent;      // # heartbeats sent (without answer)
   };
   
   const Node &  getNodeInfo(NodeId) const;
   Uint32        getNoOfConnectedNodes() const;
-  
+  void          hb_received(NodeId);
+
 private:
   Uint32        noOfAliveNodes;
   Uint32        noOfConnectedNodes;
@@ -128,6 +128,12 @@ ClusterMgr::getNoOfConnectedNodes() const {
   return noOfConnectedNodes;
 }
 
+inline
+void
+ClusterMgr::hb_received(NodeId nodeId) {
+  theNodes[nodeId].m_info.m_heartbeat_cnt= 0;
+}
+
 /*****************************************************************************/
 
 /**

ndb/src/ndbapi/TransporterFacade.cpp

@@ -126,6 +126,10 @@ reportDisconnect(void * callbackObj, NodeId nodeId, Uint32 error){
   //TransporterFacade::instance()->reportDisconnected(nodeId);
 }
 
+void
+transporter_recv_from(void * callbackObj, NodeId nodeId){
+  ((TransporterFacade*)(callbackObj))->hb_received(nodeId);
+}
 
 /****************************************************************************
  * 

ndb/src/ndbapi/TransporterFacade.hpp

@@ -114,6 +114,9 @@ public:
 
   TransporterRegistry* get_registry() { return theTransporterRegistry;};
 
+  // heart beat received from a node (e.g. a signal came)
+  void hb_received(NodeId n);
+
 private:
   /**
    * Send a signal unconditional of node status (used by ClusterMgr)
@@ -295,6 +298,12 @@ TransporterFacade::get_node_alive(NodeId n) const {
   return node.m_alive;
 }
 
+inline
+void
+TransporterFacade::hb_received(NodeId n) {
+  theClusterMgr->hb_received(n);
+}
+
 inline
 bool
 TransporterFacade::get_node_stopping(NodeId n) const {