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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2517) Implement TimelineClientAsync
Date Tue, 07 Oct 2014 23:59:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14162820#comment-14162820
] 

Zhijie Shen commented on YARN-2517:
-----------------------------------

bq. Clearly, async calls need call-back handlers just for errors. As of today, there are no
APIs that really need to send back results (not error) asynchronously. 

I realize that another requirement of TimelineClient is to wrap the read APIs to facilitate
the java app developers. These APIs are going to return results.

> Implement TimelineClientAsync
> -----------------------------
>
>                 Key: YARN-2517
>                 URL: https://issues.apache.org/jira/browse/YARN-2517
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Tsuyoshi OZAWA
>         Attachments: YARN-2517.1.patch
>
>
> In some scenarios, we'd like to put timeline entities in another thread no to block the
current one.
> It's good to have a TimelineClientAsync like AMRMClientAsync and NMClientAsync. It can
buffer entities, put them in a separate thread, and have callback to handle the responses.



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