teamconfx opened a new pull request, #8200:
URL: https://github.com/apache/hadoop/pull/8200
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### Description of PR
This PR fix [HDFS-17876](https://issues.apache.org/jira/browse/HDFS-17876)
### Summary of the change:
- File:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java:1260
- Issue: tracer.close() was called without a null check, inconsistent with
all other resources in the stop() method
- Fix: Added a defensive null check: if (tracer != null) { tracer.close();
}
This prevents a NullPointerException during shutdown if:
1. An exception occurs in the parent constructor before tracer is
initialized
2. The stopAtException() method calls stop() early during initialization
failures
3. Any future refactoring introduces paths where tracer isn't set before
stop() is called
### For code changes:
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(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
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licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
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