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https://issues.apache.org/jira/browse/HDFS-3943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-3943.
-------------------------------
Resolution: Fixed
Fix Version/s: QuorumJournalManager (HDFS-3077)
Hadoop Flags: Reviewed
Committed to branch, thx.
> QJM: remove currently unused "md5sum" field.
> --------------------------------------------
>
> Key: HDFS-3943
> URL: https://issues.apache.org/jira/browse/HDFS-3943
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: QuorumJournalManager (HDFS-3077)
>
> Attachments: hdfs-3943.txt
>
>
> Per later discussion in HDFS-3859, it turns out to be rather difficult to
> integrate md5sum verification into QJM at this point. The crux of the issue
> is that different replicas may be semantically identical, but bytewise
> unequal due to the padding at the end of the file.
> Given this, I'd like to temporarily remove the "md5sum" field from the
> protocol while we work on the more complex verification (which ignores the
> trailing padding) in HDFS-3859.
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