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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5995) Add RMStateStore metrics to monitor all RMStateStoreEventTypeTransition performance
Date Fri, 16 Dec 2016 09:45:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15753958#comment-15753958
] 

Sunil G commented on YARN-5995:
-------------------------------

[~piaoyu zhang]

Thanks for the patch.

Generally I think that its better to discuss what all metrics are we going to publish from
StateStore and the type of the metric etc. I think it will help to streamline the most needed
metrics to be exposed as of priority.

Currently you have exposed {{Duration}} for all type of apis from StateStore interface. I
think this is too much of an information and we need to see whether we need all such metrics
and what we can infer out of same. I think {{Duration}} overall for all api's may be more
meaningful.So we can see how fast the underlying storage is finishing each api writes and
gives a metric like {{no: of write ops per secs}} etc. Because I am not may not be much worried
about each api's storage duration. 

I think we also need data size distribution. We may need to see how much data is stored over
time and its latency. As mentioned in YARN-3936, I also think that *write latency* and *data
size distribution* are major to start with. 

> Add RMStateStore metrics to monitor all RMStateStoreEventTypeTransition performance
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-5995
>                 URL: https://issues.apache.org/jira/browse/YARN-5995
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: metrics, resourcemanager
>    Affects Versions: 2.7.1
>         Environment: CentOS7.2 Hadoop-2.7.1 
>            Reporter: zhangyubiao
>              Labels: patch
>         Attachments: YARN-5995.0001.patch, YARN-5995.0002.patch, YARN-5995.patch
>
>
> Add RMStateStore metrics to monitor all RMStateStoreEventTypeTransition performance



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