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From "Romain Hardouin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12758) Expose tasks queue length via JMX
Date Thu, 20 Oct 2016 14:15:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15591924#comment-15591924
] 

Romain Hardouin commented on CASSANDRA-12758:
---------------------------------------------

Ok, I've just checked that the trunk patch merged correctly on cassandra-3.0 and cassandra-3.X.
I will update the commit message and edit CHANGES.txt.
Thanks!

> Expose tasks queue length via JMX
> ---------------------------------
>
>                 Key: CASSANDRA-12758
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12758
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Romain Hardouin
>            Priority: Minor
>             Fix For: 2.1.x, 2.2.x, 3.0.x, 3.x, 4.x
>
>         Attachments: 0001-Add-MBean-to-monitor-max-queued-tasks_2.1.patch, 0001-Add-MBean-to-monitor-max-queued-tasks_2.2.patch,
0001-Add-MBean-to-monitor-max-queued-tasks_trunk.patch
>
>
> CASSANDRA-11363 introduced {{cassandra.max_queued_native_transport_requests}} to set
the NTR queue length.
> Currently Cassandra lacks of a JMX Mbean which exposes this value which would allow to:
>  
>     1. Be sure this value has been set
>     2. Plot this value in a monitoring application to make correlations with other graphs
when we make changes



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