diff --git a/src/client/src/tscParseLineProtocol.c b/src/client/src/tscParseLineProtocol.c
index 6c30c786435e3c81b87632fac0d2b14430c0a2c9..c8f4f4ec659f6921954b38e8df66e3bd021e62fd 100644
--- a/src/client/src/tscParseLineProtocol.c
+++ b/src/client/src/tscParseLineProtocol.c
@@ -383,6 +383,7 @@ static int32_t applySchemaAction(TAOS* taos, SSchemaAction* action, SSmlLinesInf
           tscError("SML:0x%" PRIx64 " apply schema action. reset query cache. error: %s", info->id, taos_errstr(res2));
         }
         taos_free_result(res2);
+        taosMsleep(50);
       }
       break;
     }
@@ -404,6 +405,7 @@ static int32_t applySchemaAction(TAOS* taos, SSchemaAction* action, SSmlLinesInf
           tscError("SML:0x%" PRIx64 " apply schema action. reset query cache. error: %s", info->id, taos_errstr(res2));
         }
         taos_free_result(res2);
+        taosMsleep(50);
       }
       break;
     }
@@ -425,6 +427,7 @@ static int32_t applySchemaAction(TAOS* taos, SSchemaAction* action, SSmlLinesInf
           tscError("SML:0x%" PRIx64 " apply schema action. reset query cache. error: %s", info->id, taos_errstr(res2));
         }
         taos_free_result(res2);
+        taosMsleep(50);
       }
       break;
     }
@@ -446,6 +449,7 @@ static int32_t applySchemaAction(TAOS* taos, SSchemaAction* action, SSmlLinesInf
           tscError("SML:0x%" PRIx64 " apply schema action. reset query cache. error: %s", info->id, taos_errstr(res2));
         }
         taos_free_result(res2);
+        taosMsleep(50);
       }
       break;
     }
@@ -487,6 +491,7 @@ static int32_t applySchemaAction(TAOS* taos, SSchemaAction* action, SSmlLinesInf
           tscError("SML:0x%" PRIx64 " apply schema action. reset query cache. error: %s", info->id, taos_errstr(res2));
         }
         taos_free_result(res2);
+        taosMsleep(50);
       }
       break;
     }