[jira] [Updated] (CASSANDRA-3455) Pending tasks should probably not include active tasks

["Sylvain Lebresne (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sylvain Lebresne updated CASSANDRA-3455:
----------------------------------------

    Attachment: 0001-Update-pending-task-count.patch
    
> Pending tasks should probably not include active tasks
> ------------------------------------------------------
>
>                 Key: CASSANDRA-3455
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3455
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.8.0, 1.0.0
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 0.8.8, 1.0.3
>
>         Attachments: 0001-Update-pending-task-count.patch
>
>
> In our TheadExecutor JMX metrics, 'pending tasks' includes 'active tasks' (because it's taskCount-completedTaskCount). I think this is counter-intuitive for most people (of course you could define 'pending tasks' as the 'pending of being fully executed' but you usually want pending to indicate if there is tasks that have to wait to be executed). Besides, I believe the initial intention was not to have pending to include active given the following comment:
> {noformat}
>     /**
>      * Get the number of tasks waiting to be executed
>      */
>     public long getPendingTasks()
> {noformat}
> This ticket propose to fix that.

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