!5898 修复B库并行逻辑解码的core问题

Merge pull request !5898 from chenxiaobin/fixbparalleldecode

src/common/backend/utils/init/postinit.cpp

@@ -1465,6 +1465,8 @@ void PostgresInitializer::InitParallelDecode()
 
     InitSettings();
 
+    InitExtensionVariable();
+
     FinishInit();
 }
 

src/gausskernel/process/tcop/postgres.cpp

@@ -7710,6 +7710,11 @@ void LoadSqlPlugin()
                 ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
                     errmsg("Please use the original role to connect B-compatibility database first, to load extension dolphin")));
             }
+
+            /* Creating extension dolphin must init mask_password_mem_cxt before */
+            Assert(t_thrd.mem_cxt.mask_password_mem_cxt != NULL);
+            Assert(IsNormalProcessingMode());
+
             /* recheck and load dolphin within lock */
             t_thrd.utils_cxt.holdLoadPluginLock[DB_CMPT_B] = true;
             pthread_mutex_lock(&g_instance.loadPluginLock[DB_CMPT_B]);

src/gausskernel/storage/replication/logical/parallel_decode_worker.cpp

@@ -1107,6 +1107,10 @@ void ParallelDecodeWorkerMain(void* point)
     pgstat_report_appname("LogicalDecodeWorker");
     pgstat_report_activity(STATE_IDLE, NULL);
 
+#if (!defined(ENABLE_MULTIPLE_NODES)) && (!defined(ENABLE_PRIVATEGAUSS))
+    LoadSqlPlugin();
+#endif
+
     t_thrd.utils_cxt.CurrentResourceOwner = ResourceOwnerCreate(NULL, "parallel decoder resource owner",
         THREAD_GET_MEM_CXT_GROUP(MEMORY_CONTEXT_STORAGE));