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From "Eric Newton (JIRA)" <>
Subject [jira] [Created] (ACCUMULO-1408) unresponsive !METADATA table seen on a very large cluster
Date Fri, 10 May 2013 15:53:15 GMT
Eric Newton created ACCUMULO-1408:

             Summary: unresponsive !METADATA table seen on a very large cluster
                 Key: ACCUMULO-1408
             Project: Accumulo
          Issue Type: Bug
          Components: tserver
    Affects Versions: 1.4.3
         Environment: large cluster
            Reporter: Eric Newton
            Assignee: Eric Newton

On a large cluster, saw an unresponsive !METADATA table; this resulted in hundreds of simultaneous
scans of the root tablet.  tservers did not look busy.  They had lots of data available on
their recv network queues, and nothing out their output queues.  Most of these recv buffers
did not change over time.  After killing these unresponsive servers the system recovered.

HDFS was about 80% full.

accumulo was running over CDH3u5.

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