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Date: Wed, 27 May 2015 02:06:17 +0000 (UTC)
From: "Szehon Ho (JIRA)" <jira@apache.org>
To: issues@hive.apache.org
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 <JIRA.12831212.1432077336713@arcas>
Subject: [jira] [Updated] (HIVE-10761) Create codahale-based metrics system
 for Hive
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     [ https://issues.apache.org/jira/browse/HIVE-10761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Szehon Ho updated HIVE-10761:
-----------------------------
    Attachment: HIVE-10761.2.patch

Some loose ends, like make it take in configured list of reporters, and add end-to-end unit test for Metastore metrics, latest patch should be ready for review.

> Create codahale-based metrics system for Hive
> ---------------------------------------------
>
>                 Key: HIVE-10761
>                 URL: https://issues.apache.org/jira/browse/HIVE-10761
>             Project: Hive
>          Issue Type: New Feature
>          Components: Diagnosability
>            Reporter: Szehon Ho
>            Assignee: Szehon Ho
>         Attachments: HIVE-10761.2.patch, HIVE-10761.patch, hms-metrics.json
>
>
> There is a current Hive metrics system that hooks up to a JMX reporting, but all its measurements, models are custom.
> This is to make another metrics system that will be based on Codahale (ie yammer, dropwizard), which has the following advantage:
> * Well-defined metric model for frequently-needed metrics (ie JVM metrics)
> * Well-defined measurements for all metrics (ie max, mean, stddev, mean_rate, etc), 
> * Built-in reporting frameworks like JMX, Console, Log, JSON webserver
> It is used for many projects, including several Apache projects like Oozie.  Overall, monitoring tools should find it easier to understand these common metric, measurement, reporting models.
> The existing metric subsystem will be kept and can be enabled if backward compatibility is desired.


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