From 33caf8e625f41e8cc0f9097926b718639ca5b45c Mon Sep 17 00:00:00 2001
From: 54liuyao <54liuyao@163.com>
Date: Thu, 16 Feb 2023 13:48:47 +0800
Subject: [PATCH] fix:check stream

---
 include/util/taoserror.h                | 1 +
 source/dnode/mnode/impl/src/mndStream.c | 6 ++++++
 source/util/src/terror.c                | 1 +
 3 files changed, 8 insertions(+)

diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index c75425425b..5aafdac3cd 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -359,6 +359,7 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_STREAM_TASK_DROPPED       TAOS_DEF_ERROR_CODE(0, 0x03F4)
 #define TSDB_CODE_MND_MULTI_REPLICA_SOURCE_DB   TAOS_DEF_ERROR_CODE(0, 0x03F5)
 #define TSDB_CODE_MND_TOO_MANY_STREAMS          TAOS_DEF_ERROR_CODE(0, 0x03F6)
+#define TSDB_CODE_MND_INVALID_TARGET_TABLE      TAOS_DEF_ERROR_CODE(0, 0x03F7)
 
 // mnode-sma
 #define TSDB_CODE_MND_SMA_ALREADY_EXIST         TAOS_DEF_ERROR_CODE(0, 0x0480)
diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index bf9168ac8f..99327d2776 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -696,6 +696,12 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
         terrno = TSDB_CODE_MND_TOO_MANY_STREAMS;
         goto _OVER;
       }
+
+      if (pStream->targetStbUid == streamObj.targetStbUid) {
+        mError("Cannot write the same stable as other stream:%s", pStream->name);
+        terrno = TSDB_CODE_MND_INVALID_TARGET_TABLE;
+        goto _OVER;
+      }
     }
   }
 
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index fecdb4d32a..bd07fb3728 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -291,6 +291,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_STREAM_OPTION,    "Invalid stream option
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_STREAM_MUST_BE_DELETED,   "Stream must be dropped first")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_MULTI_REPLICA_SOURCE_DB,  "Stream temporarily does not support source db having replica > 1")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_TOO_MANY_STREAMS,         "Too many streams")
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_TARGET_TABLE,     "Cannot write the same stable as other stream")
 
 // mnode-sma
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_SMA_ALREADY_EXIST,        "SMA already exists")