diff --git a/src/rpc/src/trpc.c b/src/rpc/src/trpc.c
index 379871804338878bab97e41f6f973bfd5c0bf4eb..cf718fc3c892e9c13892f65630c4724185b4a9e5 100644
--- a/src/rpc/src/trpc.c
+++ b/src/rpc/src/trpc.c
@@ -169,7 +169,7 @@ char *taosBuildReqHeader(void *param, char type, char *msg) {
   pHeader->sourceId = pConn->ownId;
   pHeader->destId = pConn->peerId;
   pHeader->port = 0;
-  pHeader->uid = (uint32_t)pConn;
+  pHeader->uid = (uint32_t)pConn + (uint32_t)getpid();
 
   memcpy(pHeader->meterId, pConn->meterId, tListLen(pHeader->meterId));
 
@@ -200,7 +200,7 @@ char *taosBuildReqMsgWithSize(void *param, char type, int size) {
 
   pHeader->sourceId = pConn->ownId;
   pHeader->destId = pConn->peerId;
-  pHeader->uid = (uint32_t)pConn;
+  pHeader->uid = (uint32_t)pConn + (uint32_t)getpid();
   memcpy(pHeader->meterId, pConn->meterId, tListLen(pHeader->meterId));
 
   return (char *)pHeader->content;
diff --git a/src/util/src/tmd5.c b/src/util/src/tmd5.c
index 2ccff1e22692e2b0de00e83a0d11318406b89aa7..afbd4d9dcb825164578df29f53cc81aa31f7d74d 100644
--- a/src/util/src/tmd5.c
+++ b/src/util/src/tmd5.c
@@ -88,6 +88,8 @@ static uint8_t PADDING[64] = {0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x
    mdContext. All fields are set to zero.
  */
 void MD5Init(MD5_CTX *mdContext) {
+  memset(mdContext, 0, sizeof(MD5_CTX));
+
   mdContext->i[0] = mdContext->i[1] = (uint32_t)0;
 
   /* Load magic initialization constants.