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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5398) Support SQL macros in Chukwa Charting
Date Wed, 04 Mar 2009 19:21:56 GMT
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
         Environment: Redhat EL 5.1, Java 6
            Reporter: Eric Yang


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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