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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/12/24 01:37:13 UTC

[jira] [Updated] (YARN-2990) FairScheduler's delay-scheduling always waits for node-local and rack-local delays, even for off-rack-only requests

     [ https://issues.apache.org/jira/browse/YARN-2990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated YARN-2990:
-----------------------------------
    Attachment: yarn-2990-test.patch

Posted yarn-2990-test.patch that exposes this issue. The test fails in its current form, but the test passes when delay scheduling is disabled by setting the node/rack locality delays to -1.

> FairScheduler's delay-scheduling always waits for node-local and rack-local delays, even for off-rack-only requests
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2990
>                 URL: https://issues.apache.org/jira/browse/YARN-2990
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.6.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: yarn-2990-test.patch
>
>
> Looking at the FairScheduler, it appears the node/rack locality delays are used for all requests, even those that are only off-rack. 
> More details in comments. 



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