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Posted to commits@cassandra.apache.org by "Stu Hood (JIRA)" <ji...@apache.org> on 2011/07/28 02:41:11 UTC

[jira] [Updated] (CASSANDRA-2962) Monitoring for RoundRobinScheduler

     [ https://issues.apache.org/jira/browse/CASSANDRA-2962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stu Hood updated CASSANDRA-2962:
--------------------------------

    Attachment: 0001-Use-a-named-queue-subclass-with-a-timestamp-and-expose.txt

Encapsulates the (fair) SynchronousQueue at the center of RoundRobinScheduler into a WeightedQueue class, and expose latencies on an MBean per queue.

> Monitoring for RoundRobinScheduler
> ----------------------------------
>
>                 Key: CASSANDRA-2962
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2962
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Core
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 1.0
>
>         Attachments: 0001-Use-a-named-queue-subclass-with-a-timestamp-and-expose.txt
>
>
> RoundRobinScheduler currently silently adds latency to requests when they need to be throttled: we should add monitoring to allow us to determine how much latency is being added.

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