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From "hyoungjunkim (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TAJO-333) Add metric system to Tajo
Date Wed, 11 Dec 2013 09:57:13 GMT

     [ https://issues.apache.org/jira/browse/TAJO-333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

hyoungjunkim updated TAJO-333:

    Attachment: tajo-ganglia-02.png

Jihoon, thanks for your review.
In this patch 
- change "runEB" to "executedExecutionBlocksNum" 
- add METRICS_PROPERTY_FILENAME variable in TajoConf.ConfVars
- propertyChangeChecker issue In TajoSystemMetrics
  ReloadingStrategy of PropertiesConfiguration class has not thread for checking property
file. So configurationChanged method fired when getXXX method called. 
- "localhost" In MetricsConsoleReporter issue
   TajoMetricsReporter does not print host and port when hostAndPort valus is null.  
- I removed unnecessary debug code and fixed spell in tajo-metrics.properties and removed
unused imports.
- I think that the main purpose of this issue is making metrics system and applying to daemon's
metrics. So The adding task for query's metrics like the size of intermediate data which you
mentioned is next step.
- Added ganglia reporter

> Add metric system to Tajo
> -------------------------
>                 Key: TAJO-333
>                 URL: https://issues.apache.org/jira/browse/TAJO-333
>             Project: Tajo
>          Issue Type: New Feature
>            Reporter: Hyunsik Choi
>            Assignee: hyoungjunkim
>              Labels: metrics
>             Fix For: 0.8-incubating
>         Attachments: TAJO-333.patch, TAJO-333_2.patch, tajo-ganglia-01.png, tajo-ganglia-02.png
> Currently, there is no way to measure and observe Tajo's internal operations. As a Hadoop
job, Tajo also should measure and record a lot of operational works.
> I would like to propose the use of Metrics (http://metrics.codahale.com/). It is well
known as a stable and efficient metric library.

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