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https://issues.apache.org/jira/browse/YARN-7272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16198201#comment-16198201
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Rohith Sharma K S commented on YARN-7272:
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thanks for clarifying doubts!
bq. Is there a specific concern about using leveldb to implement the WAL for
transient persistence?
We don't have any concerns for using leveldb. Given delete operation can be
performed, I would also highly recommend for using level db.
> Enable timeline collector fault tolerance
> -----------------------------------------
>
> Key: YARN-7272
> URL: https://issues.apache.org/jira/browse/YARN-7272
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineclient, timelinereader, timelineserver
> Reporter: Vrushali C
> Assignee: Rohith Sharma K S
>
> If a NM goes down and along with it the timeline collector aux service for a
> running yarn app, we would like that yarn app to re-establish connection with
> a new timeline collector.
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