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Date: Thu, 12 Nov 2015 19:54:11 +0000 (UTC)
From: "Ariel Weisberg (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Updated] (CASSANDRA-10511) Index summary downsampling
 prevents mmap access of large files after restart
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     [ https://issues.apache.org/jira/browse/CASSANDRA-10511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ariel Weisberg updated CASSANDRA-10511:
---------------------------------------
    Fix Version/s:     (was: 3.1)
                       (was: 2.2.x)
                       (was: 2.1.x)

> 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
>            Reporter: Benedict
>            Assignee: Ariel Weisberg
>
> {{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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