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From "Li Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3816) [Aggregation] App-level aggregation and accumulation for YARN system metrics
Date Tue, 18 Oct 2016 01:06:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-3816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15584027#comment-15584027
] 

Li Lu commented on YARN-3816:
-----------------------------

bq. Currently they emit them every 3 seconds, but I think we should do a time average on the
NMTimelinePublisher and emit them less often. It may help in this regard.
Yes. And we may simply extend TimelineMetricOperation to support time based accumulation operations,
then apply those operations when accumulating. 

> [Aggregation] App-level aggregation and accumulation for YARN system metrics
> ----------------------------------------------------------------------------
>
>                 Key: YARN-3816
>                 URL: https://issues.apache.org/jira/browse/YARN-3816
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Junping Du
>            Assignee: Li Lu
>              Labels: yarn-2928-1st-milestone
>             Fix For: 3.0.0-alpha1
>
>         Attachments: Application Level Aggregation of Timeline Data.pdf, YARN-3816-YARN-2928-v1.patch,
YARN-3816-YARN-2928-v2.1.patch, YARN-3816-YARN-2928-v2.2.patch, YARN-3816-YARN-2928-v2.3.patch,
YARN-3816-YARN-2928-v2.patch, YARN-3816-YARN-2928-v3.1.patch, YARN-3816-YARN-2928-v3.patch,
YARN-3816-YARN-2928-v4.patch, YARN-3816-YARN-2928-v5.patch, YARN-3816-YARN-2928-v6.patch,
YARN-3816-YARN-2928-v7.patch, YARN-3816-YARN-2928-v8.patch, YARN-3816-YARN-2928-v9.patch,
YARN-3816-feature-YARN-2928.v4.1.patch, YARN-3816-poc-v1.patch, YARN-3816-poc-v2.patch
>
>
> We need application level aggregation of Timeline data:
> - To present end user aggregated states for each application, include: resource (CPU,
Memory) consumption across all containers, number of containers launched/completed/failed,
etc. We need this for apps while they are running as well as when they are done.
> - Also, framework specific metrics, e.g. HDFS_BYTES_READ, should be aggregated to show
details of states in framework level.
> - Other level (Flow/User/Queue) aggregation can be more efficient to be based on Application-level
aggregations rather than raw entity-level data as much less raws need to scan (with filter
out non-aggregated entities, like: events, configurations, etc.).



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