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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Commented] (YARN-7652) Handle AM register requests asynchronously in FederationInterceptor
Date Mon, 08 Oct 2018 17:18:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642179#comment-16642179
] 

Íñigo Goiri commented on YARN-7652:
-----------------------------------

[^YARN-7652.v2.patch] LGTM.
+1

> Handle AM register requests asynchronously in FederationInterceptor
> -------------------------------------------------------------------
>
>                 Key: YARN-7652
>                 URL: https://issues.apache.org/jira/browse/YARN-7652
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: amrmproxy, federation
>    Affects Versions: 2.9.0, 3.0.0
>            Reporter: Subru Krishnan
>            Assignee: Botong Huang
>            Priority: Major
>         Attachments: YARN-7652.v1.patch, YARN-7652.v2.patch
>
>
> We (cc [~goiri]/[~botong]) observed that the {{FederationInterceptor}} in {{AMRMProxy}}
(and consequently the AM) is blocked if the _StateStore_ has outdated info about a _SubCluster_.
This is because we handle AM register requests synchronously. This jira proposes to move to
async similar to how we operate with allocate invocations.



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