(iotdb) branch master updated: Avoid NPE for show variables task (#16444)

[yongzao]

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yongzao pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/iotdb.git


The following commit(s) were added to refs/heads/master by this push:
     new 5e7a8c763a9 Avoid NPE for show variables task (#16444)
5e7a8c763a9 is described below

commit 5e7a8c763a91cbe414b20c0f3a6000138e53d280
Author: Yongzao <yong...@apache.org>
AuthorDate: Fri Sep 19 14:39:25 2025 +0800

    Avoid NPE for show variables task (#16444)
---
 .../plan/execution/config/executor/ClusterConfigTaskExecutor.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java
 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java
index 4df8a6a4f71..9605e38f1e3 100644
--- 
a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java
+++ 
b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java
@@ -1527,7 +1527,13 @@ public class ClusterConfigTaskExecutor implements 
IConfigTaskExecutor {
         
CONFIG_NODE_CLIENT_MANAGER.borrowClient(ConfigNodeInfo.CONFIG_REGION_ID)) {
       showVariablesResp = client.showVariables();
     } catch (ClientManagerException | TException e) {
-      future.setException(e);
+      if (showVariablesResp.getStatus().getCode()
+          == TSStatusCode.REDIRECTION_RECOMMEND.getStatusCode()) {
+        future.setException(new TException(MSG_RECONNECTION_FAIL));
+      } else {
+        future.setException(e);
+      }
+      return future;
     }
 
     // build TSBlock