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From "Sushanth Sowmyan (JIRA)" <>
Subject [jira] Commented: (HIVE-1818) Call frequency and duration metrics for HiveMetaStore via jmx
Date Tue, 25 Jan 2011 01:45:44 GMT


Sushanth Sowmyan commented on HIVE-1818:

Review board link :

> Call frequency and duration metrics for HiveMetaStore via jmx
> -------------------------------------------------------------
>                 Key: HIVE-1818
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>          Components: Metastore
>            Reporter: Sushanth Sowmyan
>            Assignee: Sushanth Sowmyan
>            Priority: Minor
>             Fix For: 0.7.0
>         Attachments: HIVE-1818-vs-1054860.patch, HIVE-1818-vs-1063088.patch, HIVE-1818.patch
> As recently brought up in the hive-dev mailing list, it'd be useful if the HiveMetaStore
had some sort of instrumentation capability so as to measure frequency of calls to various
calls on the HiveMetaStore and the duration of time spent in these calls. 
> There are already incrementCounter() and logStartFunction() / logStartTableFunction()
,etc calls in HiveMetaStore, and they could be refactored/repurposed to make calls that expose
JMX MBeans as well. Or, a Metrics subsystem could be introduced which made calls to incrementCounter()/etc
as a refactor.
> It might also be possible to specify a -D parameter that the Metrics subsystem could
use to determine whether or not to be enabled, and if so, on to what port. And once we have
the capability to instrument and expose MBeans, it might also be possible for other subsystems
to also adopt and use this system.

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