BUG#22884995: Problem with multiple LIST_TABLES_CONF signals, table put in list multiple times, fix of WL#8937

(cherry picked from commit 847b2e0a81a06fb685bb423524cea5ebbcded018)

Author: Mikael Ronström

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

@@ -4406,27 +4406,12 @@ Backup::execLIST_TABLES_CONF(Signal* signal)
       }//if
       tabPtr.p->tableType = tableType;
       tabPtr.p->tableId = tableId;
-    }//for
-  }
-  {
-    TablePtr tabPtr;
-    jam();
-    for (ptr.p->tables.first(tabPtr);
-         tabPtr.i !=RNIL;
-         ptr.p->tables.next(tabPtr))
-    {
-      /**
-       * Insert into table map after completing loop to avoid
-       * complex error handling.
-       */
-      jamLine(tabPtr.p->tableId);
 #ifdef VM_TRACE
       TablePtr locTabPtr;
       ndbassert(findTable(ptr, locTabPtr, tabPtr.p->tableId) == false);
 #endif
       insertTableMap(tabPtr, ptr.i, tabPtr.p->tableId);
-    }
-    jam();
+    }//for
   }
 
   releaseSections(handle);

storage/ndb/test/ndbapi/testDict.cpp

@@ -28,6 +28,7 @@
 #include <random.h>
 #include <NdbAutoPtr.hpp>
 #include <NdbMixRestarter.hpp>
+#include <NdbBackup.hpp>
 #include <NdbSqlUtil.hpp>
 #include <NdbEnv.h>
 #include <ndb_rand.h>
@@ -1056,6 +1057,19 @@ runDropTakeoverTest(NDBT_Context* ctx, NDBT_Step* step)
   return NDBT_OK;
 }
 
+int
+runBackup(NDBT_Context* ctx, NDBT_Step* step)
+{
+  NdbBackup backup;
+  Uint32 backupId = 0;
+  backup.clearOldBackups();
+  if (backup.start(backupId) == -1)
+  {
+    return NDBT_FAILED;
+  }
+  return NDBT_OK;
+}
+
 int
 runCreateMaxTables(NDBT_Context* ctx, NDBT_Step* step)
 {
@@ -11457,6 +11471,13 @@ TESTCASE("CreateMaxTables",
   INITIALIZER(runCreateMaxTables);
   INITIALIZER(runDropMaxTables);
 }
+TESTCASE("BackupMaxTables", 
+	 "Create max amount of tables and verify backup works\n"){
+  TC_PROPERTY("tables", 200);
+  INITIALIZER(runCreateMaxTables);
+  INITIALIZER(runBackup);
+  INITIALIZER(runDropMaxTables);
+}
 TESTCASE("PkSizes", 
 	 "Create tables with all different primary key sizes.\n"\
 	 "Test all data operations insert, update, delete etc.\n"\