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From "Philip Thompson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9526) Provide a JMX hook to monitor phi values in the FailureDetector
Date Mon, 01 Jun 2015 19:54:29 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567891#comment-14567891
] 

Philip Thompson commented on CASSANDRA-9526:
--------------------------------------------

[~brandon.williams], any suggestion on who should review this?

> Provide a JMX hook to monitor phi values in the FailureDetector
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-9526
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9526
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Ron Kuris
>             Fix For: 2.0.x
>
>         Attachments: Monitor-Phi-JMX.patch.txt, PHI-Log-Debug-When-Close.patch.txt, PHI-Race-Condition.patch.txt
>
>
> phi_convict_threshold can be tuned, but there's currently no way to monitor the phi values
to see if you're getting close.
> The attached patch adds the ability to get these values via JMX.



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