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Posted to common-issues@hadoop.apache.org by "Chris Li (JIRA)" <ji...@apache.org> on 2014/01/25 00:32:39 UTC

[jira] [Updated] (HADOOP-10279) Create multiplexer, a requirement for the fair queue

     [ https://issues.apache.org/jira/browse/HADOOP-10279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Li updated HADOOP-10279:
------------------------------

    Attachment: subtask2_add_mux.patch

Depends on subtask1: This multiplexer enables takers of the FairCallQueue to withdraw in a weighted round-robin fashion to combat starvation of low-priority Schedulables.

Weights are configurable as follows:
ipc.8020.wrr-multiplexer.weights = 30, 20, 5

Means queue0 will be drawn from thirty times, queue1 twenty times, queue2 five times, and repeat.

> Create multiplexer, a requirement for the fair queue
> ----------------------------------------------------
>
>                 Key: HADOOP-10279
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10279
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Chris Li
>         Attachments: subtask2_add_mux.patch
>
>




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