gp1314 opened a new pull request, #5984:
URL: https://github.com/apache/hadoop/pull/5984
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### Description of PR
When there is no configuration of ZooKeeper synchronization for secrets on
the KMS server (hadoop.kms.authentication.signer.secret.provider is null), the
YARN MapReduce job fails to run successfully. The reason is that the KMS
returns an error "invalidToken" as it cannot find the corresponding token in
the cache.
### How was this patch tested?
unit test.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(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?
- [ ] 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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