[jira] Updated: (HADOOP-4827) Improve data aggregation in database

["Robert Chansler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-4827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Chansler updated HADOOP-4827:
------------------------------------

    Release Note: Improved framework for data aggregation in Chuckwa.  (was: What is new in HADOOP-4827:

    *  Replace Consolidator with Aggregator macros
    * Updated database table schema
    * Fix interval for aggregation execute
    * Improved SQL macros support, add group_avg() and past_*_minutes key word)

Edit release note for publication.

What is new in HADOOP-4827:

    *  Replace Consolidator with Aggregator macros
    * Updated database table schema
    * Fix interval for aggregation execute
    * Improved SQL macros support, add group_avg() and past_*_minutes key word

> Improve data aggregation in database
> ------------------------------------
>
>                 Key: HADOOP-4827
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4827
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/chukwa
>         Environment: Redhat EL 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-4827.patch
>
>
> Chukwa is running data aggregation in database, and it has the ability to generate SQL statements base on macros.  On the other hand, there is also Consolidator program which Chukwa uses to down sample data in the database.  Consolidator program can be replaced with the generic Aggregator program plus some macros.  This enhancement will make the database aggregation framework cleaner.

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