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https://issues.apache.org/jira/browse/HDFS-7411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14278114#comment-14278114
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Colin Patrick McCabe commented on HDFS-7411:
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You can compute blocks per interval from blocks per second and interval length,
both of which are specified. And in any case, we may eventually need to start
releasing the lock occasionally during "decom intervals" as the number of
blocks continues to double year-over-year. The fact that we hold the lock
throughout the whole interval is an implementation detail. Anyway, I don't
feel that strongly about this so if you want to keep it as a per-interval
config, that's probably ok.
> Refactor and improve decommissioning logic into DecommissionManager
> -------------------------------------------------------------------
>
> Key: HDFS-7411
> URL: https://issues.apache.org/jira/browse/HDFS-7411
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.5.1
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Attachments: hdfs-7411.001.patch, hdfs-7411.002.patch,
> hdfs-7411.003.patch, hdfs-7411.004.patch, hdfs-7411.005.patch,
> hdfs-7411.006.patch
>
>
> Would be nice to split out decommission logic from DatanodeManager to
> DecommissionManager.
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