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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7075) Add the ability to automatically distribute your commitlogs across all data volumes
Date Fri, 06 Mar 2015 16:39:39 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-7075:
--------------------------------------
    Reviewer: Benedict

[~benedict] to review

> Add the ability to automatically distribute your commitlogs across all data volumes
> -----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-7075
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7075
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Tupshin Harper
>            Assignee: Branimir Lambov
>            Priority: Minor
>              Labels: performance
>             Fix For: 3.0
>
>
> given the prevalance of ssds (no need to separate commitlog and data), and improved jbod
support, along with CASSANDRA-3578, it seems like we should have an option to have one commitlog
per data volume, to even the load. i've been seeing more and more cases where there isn't
an obvious "extra" volume to put the commitlog on, and sticking it on only one of the jbodded
ssd volumes leads to IO imbalance.



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