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https://issues.apache.org/jira/browse/MAPREDUCE-6424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15264755#comment-15264755
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Li Lu commented on MAPREDUCE-6424:
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Sure. My main concern is not on the cost of multiple writes, but on the way we
convert a HistoryEvent into timeline entities. With the current way, we have to
build getMetrics, getConfigs, getXXXX for every HistoryEvent types. For most of
these types, the getters may probably be trivial. So we're wondering if we'd
like to have something like getTimelineEntitiesToPublish to generate related
timeline entities out from each event.
> Store MR counters as timeline metrics instead of event
> ------------------------------------------------------
>
> Key: MAPREDUCE-6424
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6424
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Junping Du
> Assignee: Naganarasimha G R
> Labels: yarn-2928-1st-milestone
> Attachments: MAPREDUCE-6424-YARN-2928.v1.001.patch,
> MAPREDUCE-6424-YARN-2928.v1.002.patch, MAPREDUCE-6424-YARN-2928.v1.003.patch,
> MAPREDUCE-6424-YARN-2928.v1.004.patch
>
>
> In MAPREDUCE-6327, we make map/reduce counters get encoded from
> JobFinishedEvent as timeline events with counters details in JSON format.
> We need to store framework specific counters as metrics in timeline service
> to support query, aggregation, etc.
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