From 76106165daf887be46463b78f49cc21a1d3c59f9 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Fri, 2 Jun 2023 15:13:25 +0800
Subject: [PATCH] other: add some logs.

---
 source/libs/executor/src/scanoperator.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index cea1e6361d..83a4f91034 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -2090,7 +2090,9 @@ FETCH_NEXT_BLOCK:
       while (pAPI->tqReaderFn.tqNextBlockImpl(pInfo->tqReader, id)) {
         SSDataBlock* pRes = NULL;
         int32_t code = pAPI->tqReaderFn.tqRetrieveBlock(pInfo->tqReader, &pRes, id);
+
         if (code != TSDB_CODE_SUCCESS || pRes->info.rows == 0) {
+          qDebug("failed to retrieve data from block, code:%s, rows:%"PRId64 " try next block in submit block", tstrerror(code), pRes->info.rows);
           continue;
         }
 
-- 
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