bug#4586 testSystemRestart -n SR_FULLDB

keep acc from shrinking/expanding when less than one page per fragment
is left.

This makes ACC not shrink so that one get out of pages during 
log execution in SR (which crashes badly)


ndb/src/kernel/blocks/dbacc/Dbacc.hpp:
  bug#4586
  keep acc from shrinking/expanding when less than one page per fragment
  is left
ndb/src/kernel/blocks/dbacc/DbaccMain.cpp:
  bug#4586
  keep acc from shrinking/expanding when less than one page per fragment
  is left

ndb/src/kernel/blocks/dbacc/Dbacc.hpp

@@ -1564,6 +1564,8 @@ private:
 
   Uint32 c_errorInsert3000_TableId;
   Uint32 cSrUndoRecords[5];
+
+  Uint32 c_no_fragment_allocated;
 };
 
 #endif

ndb/src/kernel/blocks/dbacc/DbaccMain.cpp

@@ -599,6 +599,7 @@ void Dbacc::ndbrestart1Lab(Signal* signal)
   for (Uint32 tmp = 0; tmp < ZMAX_UNDO_VERSION; tmp++) {
     csrVersList[tmp] = RNIL;
   }//for
+  c_no_fragment_allocated = 0;
   return;
 }//Dbacc::ndbrestart1Lab()
 
@@ -1360,6 +1361,8 @@ void Dbacc::releaseDirIndexResources(Signal* signal, FragmentrecPtr regFragPtr)
 
 void Dbacc::releaseFragRecord(Signal* signal, FragmentrecPtr regFragPtr) 
 {
+  ndbrequire(c_no_fragment_allocated > 0);
+  c_no_fragment_allocated--;
   regFragPtr.p->nextfreefrag = cfirstfreefrag;
   cfirstfreefrag = regFragPtr.i;
   initFragGeneral(regFragPtr);
@@ -6349,25 +6352,26 @@ void Dbacc::execEXPANDCHECK2(Signal* signal)
     /*--------------------------------------------------------------*/
     return;
   }//if
-  if (fragrecptr.p->firstOverflowRec == RNIL) {
-    jam();
-    allocOverflowPage(signal);
-    if (tresult > ZLIMIT_OF_ERROR) {
+  if (cfirstfreepage == RNIL) {
+    if ((cfreepage + c_no_fragment_allocated) >= cpagesize) {
       jam();
       /*--------------------------------------------------------------*/
-      /* WE COULD NOT ALLOCATE ANY OVERFLOW PAGE. THUS WE HAVE TO STOP*/
-      /* THE EXPAND SINCE WE CANNOT GUARANTEE ITS COMPLETION.         */
+      /* WE HAVE TO STOP THE EXPAND PROCESS SINCE THERE ARE NO FREE   */
+      /* PAGES. THIS MEANS THAT WE COULD BE FORCED TO CRASH SINCE WE  */
+      /* CANNOT COMPLETE THE EXPAND. TO AVOID THE CRASH WE EXIT HERE. */
       /*--------------------------------------------------------------*/
       return;
     }//if
   }//if
-  if (cfirstfreepage == RNIL) {
-    if (cfreepage >= cpagesize) {
+
+  if (fragrecptr.p->firstOverflowRec == RNIL) {
+    jam();
+    allocOverflowPage(signal);
+    if (tresult > ZLIMIT_OF_ERROR) {
       jam();
       /*--------------------------------------------------------------*/
-      /* WE HAVE TO STOP THE EXPAND PROCESS SINCE THERE ARE NO FREE   */
-      /* PAGES. THIS MEANS THAT WE COULD BE FORCED TO CRASH SINCE WE  */
-      /* CANNOT COMPLETE THE EXPAND. TO AVOID THE CRASH WE EXIT HERE. */
+      /* WE COULD NOT ALLOCATE ANY OVERFLOW PAGE. THUS WE HAVE TO STOP*/
+      /* THE EXPAND SINCE WE CANNOT GUARANTEE ITS COMPLETION.         */
       /*--------------------------------------------------------------*/
       return;
     }//if
@@ -6933,16 +6937,8 @@ void Dbacc::execSHRINKCHECK2(Signal* signal)
       }//if
     }//if
   }//if
-  if (fragrecptr.p->firstOverflowRec == RNIL) {
-    jam();
-    allocOverflowPage(signal);
-    if (tresult > ZLIMIT_OF_ERROR) {
-      jam();
-      return;
-    }//if
-  }//if
   if (cfirstfreepage == RNIL) {
-    if (cfreepage >= cpagesize) {
+    if (cfreepage + c_no_fragment_allocated >= cpagesize) {
       jam();
       /*--------------------------------------------------------------*/
       /* WE HAVE TO STOP THE SHRINK PROCESS SINCE THERE ARE NO FREE   */
@@ -6952,6 +6948,14 @@ void Dbacc::execSHRINKCHECK2(Signal* signal)
       return;
     }//if
   }//if
+  if (fragrecptr.p->firstOverflowRec == RNIL) {
+    jam();
+    allocOverflowPage(signal);
+    if (tresult > ZLIMIT_OF_ERROR) {
+      jam();
+      return;
+    }//if
+  }//if
   if (checkScanShrink(signal) == 1) {
     jam();
     /*--------------------------------------------------------------*/
@@ -12771,6 +12775,7 @@ void Dbacc::seizeDirrange(Signal* signal)
 /* --------------------------------------------------------------------------------- */
 void Dbacc::seizeFragrec(Signal* signal) 
 {
+  c_no_fragment_allocated++;
   fragrecptr.i = cfirstfreefrag;
   ptrCheckGuard(fragrecptr, cfragmentsize, fragmentrec);
   cfirstfreefrag = fragrecptr.p->nextfreefrag;