XbaoWu opened a new pull request, #6616:
URL: https://github.com/apache/hadoop/pull/6616
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### Description of PR
For more information about this PR, please refer to the following issue：
[YARN-11626](https://issues.apache.org/jira/browse/YARN-11626) Optimization
of the safeDelete operation in ZKRMStateStore
The NoNodeException clearly indicates that the Znode no longer exists, so if
we check again and find that the node does not actually exist, we can safely
ignore this exception to avoid triggering a larger impact on the cluster caused
by ResourceManager failover.
### How was this patch tested?
add TestCheckRemoveZKNodeRMStateStore.testSafeDeleteZKNode()
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [x] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [x] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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