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From "Eric Newton (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-542) with a large root tablet, tablet servers will get stuck loading other metadata tablets
Date Tue, 17 Apr 2012 21:27:13 GMT
with a large root tablet, tablet servers will get stuck loading other metadata tablets
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                 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: 1.3.6


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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