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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5398) Support SQL macros in Chukwa Charting
Date Sun, 08 Mar 2009 00:36:56 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5398?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Yang updated HADOOP-5398:
------------------------------

    Release Note: 
What is new in HADOOP-5398:

   - Create a new Macro class for macro substitution.
   - Changed Aggregator to use Macro class.
   - Added macro substitution support to Chukwa Charting.
   - Added Macro test case.

    Hadoop Flags: [Reviewed]
          Status: Patch Available  (was: Open)

> Support SQL macros in Chukwa Charting
> -------------------------------------
>
>                 Key: HADOOP-5398
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5398
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: contrib/chukwa
>         Environment: Redhat EL 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: HADOOP-5398.patch
>
>
> In Chukwa Database aggregator, we could execute SQL statement which looks like:
> insert into [cluster_system_metrics] (select [avg(system_metrics)] from [system_metrics]
where timestamp between [past_10_minutes] and [now]);
> This new feature is to bring macro language to HICC charting.  The user can write statement
like:
> select timestamp,host,load_5 from [system_metrics] where timestamp between [start] and
[end];
> This statement will automatically expand to:
> select timestamp, host, load_5 from system_metrics_2045_week where timestamp between
'2009-03-02 00:00:00' and '2009-03-03 00:00:00';

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