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From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10357) mmap file boundary selection is broken for some large files
Date Wed, 16 Sep 2015 18:41:45 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14790895#comment-14790895
] 

Jeremiah Jordan commented on CASSANDRA-10357:
---------------------------------------------

I was hitting this, and I can confirm that after applying this patch and running upgradesstables
I get multiple segments, and my sstable gets mmaped.

> mmap file boundary selection is broken for some large files 
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-10357
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10357
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Benedict
>            Assignee: Benedict
>             Fix For: 2.1.10
>
>
> If an early open interval occurs to close to an mmap boundary, the boundary can be lost.
Patch available [here|https://github.com/belliottsmith/cassandra/tree/mmap-boundaries].



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