Todd Lipcon created HDFS-3943:
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Summary: 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
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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