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https://issues.apache.org/jira/browse/HDFS-6955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14739273#comment-14739273
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Vinayakumar B commented on HDFS-6955:
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bq. Do we need the separate counter for tmp or can we just rename the
reservedForRbw counter to reserved space?
Thats the good point [~arpitagarwal].
We could combine it, but 'reservedSpaceForRBW' is exposed as VolumeInfo metric.
If we combine it, then metric will have incompatible change.
What do you say, is it okay to combine despite incompatible change in metric?
> DN should reserve disk space for a full block when creating tmp files
> ---------------------------------------------------------------------
>
> Key: HDFS-6955
> URL: https://issues.apache.org/jira/browse/HDFS-6955
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.5.0
> Reporter: Arpit Agarwal
> Assignee: Kanaka Kumar Avvaru
> Attachments: HDFS-6955-01.patch, HDFS-6955-02.patch,
> HDFS-6955-03.patch, HDFS-6955-04.patch, HDFS-6955-05.patch, HDFS-6955-06.patch
>
>
> HDFS-6898 is introducing disk space reservation for RBW files to avoid
> running out of disk space midway through block creation.
> This Jira is to introduce similar reservation for tmp files.
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