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From "Dave Marion (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4004) open WALs prevent DN decommissioning
Date Fri, 01 Apr 2016 16:17:25 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15221909#comment-15221909
] 

Dave Marion commented on ACCUMULO-4004:
---------------------------------------

bq.  it sounds like it would be important/useful for ops people to know about.

Agreed. I had not considered updates to the book - I don't have a copy and I don't know if
there are planned updates.

> open WALs prevent DN decommissioning
> ------------------------------------
>
>                 Key: ACCUMULO-4004
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4004
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: tserver
>            Reporter: Eric Newton
>            Assignee: Dave Marion
>             Fix For: 1.6.6, 1.7.2, 1.8.0
>
>         Attachments: ACCUMULO-4004-1.patch
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> It should be possible to manually roll WALs so that files on decommissioning datanodes
are closed and the decommissioning process can complete. At the very least, the logs could
be closed after an elapsed period of time, such as an hour.



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