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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10511) Index summary downsampling prevents mmap access of large files after restart
Date Tue, 13 Oct 2015 17:00:07 GMT
Benedict created CASSANDRA-10511:
------------------------------------

             Summary: Index summary downsampling prevents mmap access of large files after
restart
                 Key: CASSANDRA-10511
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10511
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Benedict
             Fix For: 3.x, 2.1.x, 2.2.x, 3.0.x


{{SSTableReader.cloneWithNewSummarySampleLevel}} constructs a {{SegmentedFile.Builder}} but
never populates it with any boundaries. For files larger than 2Gb, this will result in their
being accessed via buffered io after a restart.



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