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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9702) Repair running really slow
Date Fri, 30 Oct 2015 16:56:27 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-9702:
-----------------------------------------
    Component/s: Streaming and Messaging

> Repair running really slow
> --------------------------
>
>                 Key: CASSANDRA-9702
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9702
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>         Environment: C* 2.1.7, Debian Wheezy
>            Reporter: mlowicki
>             Fix For: 2.1.x
>
>         Attachments: db1.system.log
>
>
> We're using 2.1.x since the very beginning and we always had problem with failing or
slow repair. In one data center we aren't able to finish repair for many weeks (partially
because CASSANDRA-9681 as we needed to reboot nodes periodically).
> I've launched it today morning (12 hours now) and monitor using https://github.com/spotify/cassandra-opstools/blob/master/bin/spcassandra-repairstats.
For the first hour it progressed to 9.43% but then it took ~10 hours to reach 9.44%. I see
very rarely logs related to repair (each 15-20 minutes but sometimes nothing new for 1 hour).
> Repair launched with:
> {code}
> nodetool repair --partitioner-range --parallel --in-local-dc {keyspace}
> {code}
> Attached log file from today.
> We've ~4.1TB of data in 12 nodes with RF set to 3 (2 DC with 6 nodes each).



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