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https://issues.apache.org/jira/browse/YARN-4679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15139451#comment-15139451
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Karthik Kambatla commented on YARN-4679:
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bq. There are other reasons we will want to persist node information, like
YARN-998
YARN-291 was implemented before work-preserving NM restart was enabled. Now,
one could dynamically change a node's resource config and bounce the NM. Do we
recommend one approach over the other?
> When work-preserving restart is enabled, the scheduler should wait for the
> earlier of recovery completion and configured wait time
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-4679
> URL: https://issues.apache.org/jira/browse/YARN-4679
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Reporter: Karthik Kambatla
>
> When work-preserving restart is enabled, it appears the restart (or failover)
> is unconditionally blocked for the configured delay even if the recovery
> itself finishes sooner than this. This should be updated to wait for the
> earlier of the two conditions. Also, it would be nice to allow setting the
> config to -1 to indicate wait as long as need for the recovery to be
> completed.
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