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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ACCUMULO-542) with a large root tablet, tablet servers will get stuck loading other metadata tablets
Date Fri, 27 Apr 2012 11:53:49 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Newton resolved ACCUMULO-542.
----------------------------------

       Resolution: Fixed
    Fix Version/s: 1.4.1
    
> with a large root tablet, tablet servers will get stuck loading other metadata tablets
> --------------------------------------------------------------------------------------
>
>                 Key: ACCUMULO-542
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-542
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.4.0, 1.3.5
>         Environment: large cluster with 390+ metadata data tablets
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>            Priority: Critical
>             Fix For: 1.4.1, 1.3.6
>
>
> Trying to bring up a large cluster, metadata tablets failed to load. These metadata tablets
were trying to read their entries from the root tablet.
> Workaround is to double the memory used for scanning the !METADATA table:
> {noformat}
> shell> config -t !METADATA -s table.scan.max.memory=2M
> {noformat}
> Nothing needs to be done: the tablet servers will recover as soon as this value is changed.

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