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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9533) Make batch commitlog mode easier to tune
Date Tue, 02 Jun 2015 18:43:49 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14569552#comment-14569552
] 

Jonathan Ellis commented on CASSANDRA-9533:
-------------------------------------------

bq. We can certainly wait for the "queue" to empty, by issuing Barriers on the OpOrder; we
already issue one and wait for any active at that moment to complete, which is probably good
enough. 

WFM.

> Make batch commitlog mode easier to tune
> ----------------------------------------
>
>                 Key: CASSANDRA-9533
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9533
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>            Assignee: Benedict
>             Fix For: 3.x
>
>
> As discussed in CASSANDRA-9504, 2.1 changed commitlog_sync_batch_window_in_ms from a
maximum time to wait between fsync to the minimum time, so one must be very careful to keep
it small enough that most writers aren't kept waiting.



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