ndb - bug#28443

  Make sure that data can not e left lingering in receive buffer


ndb/src/common/transporter/Packer.cpp:
  test, make MAX_RECEIVED_SIGNALS an variable
ndb/src/common/transporter/TCP_Transporter.hpp:
  add new method for checking of data in receive buffer
ndb/src/common/transporter/TransporterRegistry.cpp:
  Make sure that 
  1) poll_TCP return true if any transporter has data in receiveBuffer
     (previously only if socket had data)
  2) performReceive executes signals if TCP transporter has data in receiveBuffer
     (previously only if data was recevied)
ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp:
  test, make MAX_RECEIVED_SIGNALS an variable
ndb/test/ndbapi/testNdbApi.cpp:
  testcase
ndb/test/run-test/daily-basic-tests.txt:
  testcase

ndb/src/common/transporter/Packer.cpp

@@ -21,7 +21,12 @@
 #include <TransporterCallback.hpp>
 #include <RefConvert.hpp>
 
+#ifdef ERROR_INSERT
+Uint32 MAX_RECEIVED_SIGNALS = 1024;
+#else
 #define MAX_RECEIVED_SIGNALS 1024
+#endif
+
 Uint32
 TransporterRegistry::unpack(Uint32 * readPtr,
 			    Uint32 sizeOfData,

ndb/src/common/transporter/TCP_Transporter.hpp

@@ -100,6 +100,10 @@ private:
   virtual void updateReceiveDataPtr(Uint32 bytesRead);
 
   virtual Uint32 get_free_buffer() const;
+
+  inline bool hasReceiveData () const {
+    return receiveBuffer.sizeOfData > 0;
+  }
 protected:
   /**
    * Setup client/server and perform connect/accept

ndb/src/common/transporter/TransporterRegistry.cpp

@@ -807,6 +807,7 @@ TransporterRegistry::poll_OSE(Uint32 timeOutMillis)
 Uint32 
 TransporterRegistry::poll_TCP(Uint32 timeOutMillis)
 {
+  bool hasdata = false;
   if (false && nTCPTransporters == 0)
   {
     tcpReadSelectReply = 0;
@@ -851,6 +852,7 @@ TransporterRegistry::poll_TCP(Uint32 timeOutMillis)
       // Put the connected transporters in the socket read-set 
       FD_SET(socket, &tcpReadset);
     }
+    hasdata |= t->hasReceiveData();
   }
   
   // The highest socket value plus one
@@ -867,7 +869,7 @@ TransporterRegistry::poll_TCP(Uint32 timeOutMillis)
   }
 #endif
   
-  return tcpReadSelectReply;
+  return tcpReadSelectReply || hasdata;
 }
 #endif
 
@@ -902,25 +904,26 @@ TransporterRegistry::performReceive()
 #endif
 
 #ifdef NDB_TCP_TRANSPORTER
-  if(tcpReadSelectReply > 0)
+  for (int i=0; i<nTCPTransporters; i++) 
   {
-    for (int i=0; i<nTCPTransporters; i++) 
-    {
-      checkJobBuffer();
-      TCP_Transporter *t = theTCPTransporters[i];
-      const NodeId nodeId = t->getRemoteNodeId();
-      const NDB_SOCKET_TYPE socket    = t->getSocket();
-      if(is_connected(nodeId)){
-	if(t->isConnected() && FD_ISSET(socket, &tcpReadset)) 
+    checkJobBuffer();
+    TCP_Transporter *t = theTCPTransporters[i];
+    const NodeId nodeId = t->getRemoteNodeId();
+    const NDB_SOCKET_TYPE socket    = t->getSocket();
+    if(is_connected(nodeId)){
+      if(t->isConnected())
+      {
+        if (FD_ISSET(socket, &tcpReadset))
 	{
-	  const int receiveSize = t->doReceive();
-	  if(receiveSize > 0)
-	  {
-	    Uint32 * ptr;
-	    Uint32 sz = t->getReceiveData(&ptr);
-	    Uint32 szUsed = unpack(ptr, sz, nodeId, ioStates[nodeId]);
-	    t->updateReceiveDataPtr(szUsed);
-          }
+	  t->doReceive();
+        }
+
+        if (t->hasReceiveData())
+        {
+          Uint32 * ptr;
+          Uint32 sz = t->getReceiveData(&ptr);
+          Uint32 szUsed = unpack(ptr, sz, nodeId, ioStates[nodeId]);
+          t->updateReceiveDataPtr(szUsed);
 	}
       } 
     }

ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp

@@ -135,6 +135,7 @@ Cmvmi::~Cmvmi()
 
 #ifdef ERROR_INSERT
 NodeBitmask c_error_9000_nodes_mask;
+extern Uint32 MAX_RECEIVED_SIGNALS;
 #endif
 
 void Cmvmi::execNDB_TAMPER(Signal* signal) 
@@ -164,6 +165,22 @@ void Cmvmi::execNDB_TAMPER(Signal* signal)
     kill(getpid(), SIGABRT);
   }
 #endif
+
+#ifdef ERROR_INSERT
+  if (signal->theData[0] == 9003)
+  {
+    if (MAX_RECEIVED_SIGNALS < 1024)
+    {
+      MAX_RECEIVED_SIGNALS = 1024;
+    }
+    else
+    {
+      MAX_RECEIVED_SIGNALS = rand() % 128;
+    }
+    ndbout_c("MAX_RECEIVED_SIGNALS: %d", MAX_RECEIVED_SIGNALS);
+    CLEAR_ERROR_INSERT_VALUE;
+  }
+#endif
 }//execNDB_TAMPER()
 
 void Cmvmi::execSET_LOGLEVELORD(Signal* signal) 

ndb/test/ndbapi/testNdbApi.cpp

@@ -1131,7 +1131,36 @@ int runBug_11133(NDBT_Context* ctx, NDBT_Step* step){
   return result;
 }
 
+int 
+runBug28443(NDBT_Context* ctx, NDBT_Step* step)
+{
+  int result = NDBT_OK;
+  int records = ctx->getNumRecords();
+  
+  NdbRestarter restarter;
+
+  restarter.insertErrorInAllNodes(9003);
+
+  for (Uint32 i = 0; i<ctx->getNumLoops(); i++)
+  {
+    HugoTransactions hugoTrans(*ctx->getTab());
+    if (hugoTrans.loadTable(GETNDB(step), records, 2048) != 0)
+    {
+      result = NDBT_FAILED;
+      goto done;
+    }
+    if (runClearTable(ctx, step) != 0)
+    {
+      result = NDBT_FAILED;
+      goto done;
+    }
+  }
+  
+done:
+  restarter.insertErrorInAllNodes(9003);
 
+  return result;
+}
 
 NDBT_TESTSUITE(testNdbApi);
 TESTCASE("MaxNdb", 
@@ -1212,6 +1241,11 @@ TESTCASE("Bug_11133",
   INITIALIZER(runBug_11133);
   FINALIZER(runClearTable);
 }
+TESTCASE("Bug28443", 
+	 ""){ 
+  INITIALIZER(runBug28443);
+  FINALIZER(runClearTable);
+}
 NDBT_TESTSUITE_END(testNdbApi);
 
 int main(int argc, const char** argv){

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

@@ -606,6 +606,10 @@ max-time: 500
 cmd: testNdbApi
 args: -n Bug_11133 T1 
 
+max-time: 1000
+cmd: testNdbApi
+args: -n BugBug28443
+
 #max-time: 500
 #cmd: testInterpreter
 #args: T1