Ming Ma created HDFS-9004:
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Summary: Add upgrade domain to DatanodeInfo
Key: HDFS-9004
URL: https://issues.apache.org/jira/browse/HDFS-9004
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Ming Ma
As part of upgrade domain feature, we first need to add upgrade domain string
to {{DatanodeInfo}}. It includes things like:
* Add a new field to DatanodeInfo.
* Modify protobuf for DatanodeInfo.
* Update DatanodeInfo.getDatanodeReport to include upgrade domain.
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