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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-549) Asynchronous application submission
Date Sat, 20 Apr 2013 03:27:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637101#comment-13637101

Vinod Kumar Vavilapalli commented on YARN-549:

bq. Does it make sense to print some log every so often to let users now, if the application
is stuck in new/saving state for a long time? Say every 10-15 times of the polling-interval
CLI is the most common user of YarnClient. Having a log there is helpful for command line
clients. Think command line clients which submit jobs like when you do "hadoop jar".

Again, we don't need to add it for every polling iteration. Only if submission is stuck for
say 10 times polling interval - that way it will not be printed at all in the common case,
but will print something that is really useful when submission is stuck for some reason.

> Asynchronous application submission
> -----------------------------------
>                 Key: YARN-549
>                 URL: https://issues.apache.org/jira/browse/YARN-549
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: Proposal of Asynchronous Application Submission_v1.pdf, YARN-549.1.patch
> Currently, when submitting an application, storeApplication will be called for recovery.
However, it is a blocking API, and is likely to block concurrent application submissions.
Therefore, it is good to make application submission asynchronous, and postpone storeApplication.

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