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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-624) iterators may open lots of compressors
Date Thu, 07 Jun 2012 11:56:22 GMT
Eric Newton created ACCUMULO-624:
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             Summary: iterators may open lots of compressors
                 Key: ACCUMULO-624
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-624
             Project: Accumulo
          Issue Type: Bug
          Components: tserver
            Reporter: Eric Newton
            Assignee: Keith Turner


A large iterator tree may create many instances of Compressors.  These instances are pulled
from a pool that never decreases in size.  So, if 50 simultaneous queries are run over dozens
of files, each with a complex iterator stack, there will be thousands of compressors created.
 Each of these holds a large buffer.  This can cause the server to run out of memory.

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