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The following commit(s) were added to refs/heads/master by this push:
     new 446514e6a66 [fix](group commit) fix NPE in group commit select backend 
(#43629)
446514e6a66 is described below

commit 446514e6a666a64863ea3e47cf72d91e4dd378c2
Author: meiyi <myime...@gmail.com>
AuthorDate: Mon Nov 11 21:55:11 2024 +0800

    [fix](group commit) fix NPE in group commit select backend (#43629)
    
    Problem Summary:
    ```
    2024-11-11 12:00:12,200 WARN (mysql-nio-pool-24123|259) execute Exception. 
stmt[15559118, 7d88d2401de44f4b-8325fbee3de50791]
    java.lang.NullPointerException: Cannot invoke 
"org.apache.doris.system.Backend.isActive()" because "backend" is null
            at 
org.apache.doris.load.GroupCommitManager.getCachedBackend(GroupCommitManager.java:305)
 ~[doris-fe.jar:1.2-SNAPSHOT]
            at 
org.apache.doris.load.GroupCommitManager.selectBackendForCloudGroupCommitInternal(GroupCommitManager.java:251)
 ~[doris-fe.jar:1.2-SNAPSHOT]
            at 
org.apache.doris.load.GroupCommitManager.selectBackendForGroupCommitInternal(GroupCommitManager.java:239)
 ~[doris-fe.jar:1.2-SNAPSHOT]
            at 
org.apache.doris.load.GroupCommitManager.selectBackendForGroupCommit(GroupCommitManager.java:203)
 ~[doris-fe.jar:1.2-SNAPSHOT]
            at 
org.apache.doris.cloud.planner.CloudGroupCommitPlanner.selectBackends(CloudGroupCommitPlanner.java:49)
 ~[doris-fe.jar:1.2-SNAPSHOT]
    ```
    Co-authored-by: meiyi <me...@selectdb.com>
---
 .../src/main/java/org/apache/doris/load/GroupCommitManager.java   | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git 
a/fe/fe-core/src/main/java/org/apache/doris/load/GroupCommitManager.java 
b/fe/fe-core/src/main/java/org/apache/doris/load/GroupCommitManager.java
index 3177f96cb86..3b108ed638a 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/load/GroupCommitManager.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/load/GroupCommitManager.java
@@ -328,13 +328,11 @@ public class GroupCommitManager {
                 // Another thread gets the same tableId but can not find this 
tableId.
                 // So another thread needs to get the random backend.
                 Long backendId = tableToBeMap.get(encode(cluster, tableId));
-                Backend backend;
-                if (backendId != null) {
-                    backend = Env.getCurrentSystemInfo().getBackend(backendId);
-                } else {
+                if (backendId == null) {
                     return null;
                 }
-                if (backend.isActive() && !backend.isDecommissioned()) {
+                Backend backend = 
Env.getCurrentSystemInfo().getBackend(backendId);
+                if (backend != null && backend.isActive() && 
!backend.isDecommissioned()) {
                     return backend.getId();
                 } else {
                     tableToBeMap.remove(encode(cluster, tableId));


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