Zhe Zhang created HDFS-7929:
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Summary: inotify unable fetch pre-upgrade edit log segments once
upgrade starts
Key: HDFS-7929
URL: https://issues.apache.org/jira/browse/HDFS-7929
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Zhe Zhang
Assignee: Zhe Zhang
inotify is often used to periodically poll HDFS events. However, once an HDFS
upgrade has started, edit logs are moved to /previous on the NN, which is not
accessible. Moreover, once the upgrade is finalized /previous is currently lost
forever.
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