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https://issues.apache.org/jira/browse/HDFS-2212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072115#comment-13072115
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Todd Lipcon commented on HDFS-2212:
-----------------------------------
btw, I should note that this doesn't work with the BackupNode, but the BN is
broken in trunk as is -- since it doesn't handle checksummed edits correctly.
This is addressed in 1073 which is merging any day now.
> Refactor double-buffering code out of JournalManagers
> -----------------------------------------------------
>
> Key: HDFS-2212
> URL: https://issues.apache.org/jira/browse/HDFS-2212
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.23.0
>
> Attachments: hdfs-2212.txt
>
>
> This is a small cleanup that makes EditLogFileOutputStream and
> EditLogBackupOutputStream more consistent with each other on how they buffer
> edits. It simply refactors the double-buffering behavior into a new class.
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