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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-2313) CommutativeRowIndexer always read full row in memory
Date Thu, 17 Mar 2011 02:33:29 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-2313:
--------------------------------------

    Reviewer: tjake

> CommutativeRowIndexer always read full row in memory
> ----------------------------------------------------
>
>                 Key: CASSANDRA-2313
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2313
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 0.8
>
>         Attachments: 0001-Introduce-CompactionController-to-handler-compaction.patch,
0002-Make-CommutativeRowIndexer-uses-AbstractCompactionRo.patch
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> CommutativeRowIndexer use CFSerializer.deserializeColumns() that read the full row in
memory. We should use PreCompactedRow/LazilyCompactedRow instead to avoid this on huge row.
> As an added benefit, using PreCompactedRow will avoid a current seek back to write the
row size.

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