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Posted to commits@cassandra.apache.org by "Jeff Jirsa (JIRA)" <ji...@apache.org> on 2016/10/19 00:27:58 UTC

[jira] [Updated] (CASSANDRA-12626) LWT contention appears to be under reported

     [ https://issues.apache.org/jira/browse/CASSANDRA-12626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jeff Jirsa updated CASSANDRA-12626:
-----------------------------------
    Reviewer: Edward Capriolo

> LWT contention appears to be under reported
> -------------------------------------------
>
>                 Key: CASSANDRA-12626
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12626
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Observability
>            Reporter: Christopher Batey
>            Assignee: Christopher Batey
>            Priority: Minor
>             Fix For: 3.x
>
>
> I was surprised how little contention was being reported and looking at the code we miss out reporting contention when there is a timeout at the prepare phase.
> If this {{StorageProxy.beginAndRepairPaxos}} throws then the contentions count isn't added to the histogram.



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