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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11714) Newly added NN storage directory won't get initialized and cause space exhaustion
Date Mon, 01 May 2017 22:26:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15991682#comment-15991682
] 

Zhe Zhang commented on HDFS-11714:
----------------------------------

[~kihwal] In most other JIRAs we don't wait for pre-commit Jenkins on lower branch patches.
So I would say pls go ahead with the commits.

> Newly added NN storage directory won't get initialized and cause space exhaustion
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-11714
>                 URL: https://issues.apache.org/jira/browse/HDFS-11714
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.3
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
>         Attachments: HDFS-11714.trunk.patch, HDFS-11714.v2.branch-2.patch, HDFS-11714.v2.trunk.patch,
HDFS-11714.v3.branch-2.patch, HDFS-11714.v3.trunk.patch
>
>
> When an empty namenode storage directory is detected on normal NN startup, it may not
be fully initialized. The new directory is still part of "in-service" NNStrage and when a
checkpoint image is uploaded, a copy will also be written there.  However, the retention manager
won't be able to purge old files since it is lacking a VERSION file.  This causes fsimages
to pile up in the directory.  With a big name space, the disk will be filled in the order
of days or weeks.



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