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https://issues.apache.org/jira/browse/YARN-1521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13947392#comment-13947392
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Karthik Kambatla commented on YARN-1521:
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Sorry for the delay in getting to this. Haven't look at the patch itself yet.
{quote}
ApplicationMasterProtocol
1. registerApplicationMaster
2. finishApplicationMaster
3. allocate
{quote}
Don't remember the source corresponding to these methods off the top of my
head, but would think we *should* mark all of them as well. I am okay with
doing this in a separate JIRA to unblock this.
# Register resets the sequence number - Idempotent. YARN-556 allows a running
AM to re-register, albeit on resync.
# Finish should be similar to kill - Idempotent. Should be similar to
killApplication?
# Allocate - Idempotent or AtMostOnce - as the AM heartbeats periodically.
Preferably Idempotent.
> Mark appropriate protocol methods with the idempotent annotation or
> AtMostOnce annotation
> -----------------------------------------------------------------------------------------
>
> Key: YARN-1521
> URL: https://issues.apache.org/jira/browse/YARN-1521
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Xuan Gong
> Assignee: Xuan Gong
> Attachments: YARN-1521.0.patch, YARN-1521.1.patch, YARN-1521.2.patch
>
>
> After YARN-1028, we add the automatically failover into RMProxy. This JIRA is
> to identify whether we need to add idempotent annotation and which methods
> can be marked as idempotent.
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