huaxiangsun opened a new pull request, #4170:
URL: https://github.com/apache/hadoop/pull/4170
…etes
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### Description of PR
When Dn with the same uuid is registered with a different ip,
host2DatanodeMap needs to be updated accordingly.
### How was this patch tested?
Tested 3.3.2 with the patch on a eks cluster, restarted the pod hosting
DataNode and HBase region server. After that, doing a major compaction of Hbase
region, made sure that locality is kept.
There is also a new unittest case added.
### For code changes:
- [ ] 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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