Tsz Wo (Nicholas), SZE created HDFS-5645:
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Summary: Support upgrade marker in editlog streams
Key: HDFS-5645
URL: https://issues.apache.org/jira/browse/HDFS-5645
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
During upgrade, a marker can be inserted into the editlog streams so that it is
possible to roll back to the marker transaction.
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