Jing Zhao created HDFS-6041:
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Summary: Downgrade/Finalize should rename the rollback image
instead of purging it
Key: HDFS-6041
URL: https://issues.apache.org/jira/browse/HDFS-6041
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Jing Zhao
Assignee: Jing Zhao
After we do rollingupgrade downgrade/finalize, instead of purging the rollback
image, we'd better rename it back to normal image, since the rollback image can
be the most recent checkpoint.
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