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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1780) periodic + flush commitlog mode
Date Thu, 25 Nov 2010 19:35:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12935849#action_12935849
] 

Brandon Williams commented on CASSANDRA-1780:
---------------------------------------------

No noticeable performance impact with stress.py defaults, or with one column per row in periodic
mode.

> periodic + flush commitlog mode
> -------------------------------
>
>                 Key: CASSANDRA-1780
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1780
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>             Fix For: 0.7.0
>
>         Attachments: 1780.txt
>
>
> periodic-sync commitlog mode only flushes before it syncs, which means its best case
durability is very similar to its worst case.  if we had a mode that flushed but did not sync
then it would only lose data for actual power failures.

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