bug#14028 -

  ndb crash if trigger record get to big, fix incorrect max size of trigger record

ndb/src/kernel/blocks/backup/Backup.cpp

@@ -2424,8 +2424,7 @@ Backup::execDEFINE_BACKUP_REQ(Signal* signal)
   };
   const Uint32 maxInsert[] = {
     2048,  // Temporarily to solve TR515
-    //25,      // 100 bytes
-    2048,    // 4k
+    4096,    // 4k
     16*3000, // Max 16 tuples
   };
   Uint32 minWrite[] = {
@@ -3231,7 +3230,7 @@ Backup::execSTART_BACKUP_REQ(Signal* signal)
       trigPtr.p->tab_ptr_i = tabPtr.i;
       trigPtr.p->logEntry = 0;
       trigPtr.p->event = j;
-      trigPtr.p->maxRecordSize = 2048;
+      trigPtr.p->maxRecordSize = 4096;
       trigPtr.p->operation = 
 	&ptr.p->files.getPtr(ptr.p->logFilePtr)->operation;
       trigPtr.p->operation->noOfBytes = 0;