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https://issues.apache.org/jira/browse/YARN-5281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15342636#comment-15342636
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Sangjin Lee commented on YARN-5281:
-----------------------------------
Thanks for opening the discussion [~jrottinghuis].
Others have already pointed out most of the key points. I would also very much
like to see an alternate storage implementation although it is for
test/non-production purposes. That said, creating an implementation that has
feature parity is a fairly major undertaking as we found out with our local
file-based implementation. It is not only creating an implementation that's not
trivial, but is also *maintaining* it so that it keeps up with features that
are being added. Just so that we're clear of the implications.
> Explore supporting a simpler back-end implementation for ATS v2
> ---------------------------------------------------------------
>
> Key: YARN-5281
> URL: https://issues.apache.org/jira/browse/YARN-5281
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Joep Rottinghuis
>
> During the merge discussion [~kasha] raised the question whether we would
> support simpler backend for users to try out, in addition to the HBase
> implementation.
> The understanding is that this would not be meant to scale, but it could
> simplify initial adoption and early usage.
> I'm filing this jira to gather the merits and challenges of such approach in
> one place.
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