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From "Eric Yang (JIRA)" <>
Subject [jira] Commented: (CHUKWA-307) Refactor database to use lightweight scheme
Date Thu, 18 Jun 2009 00:22:07 GMT


Eric Yang commented on CHUKWA-307:

Chukwa records are not uniform.  For example, let's say top, iostat, sar are groupped into
"system metrics".  Chukwa records may contain only metrics from iostat and sar for one record,
then another record contains top.  Records are arriving at different demux which prevent this
to possible.  In addition, relational database has fixed schema, it's hard to add additional
columns into database due to the fact that adding columns are time consuming process.  The
real fix is to serve data from HDFS with index (CHUKWA-22), or use a column stored system
like hbase.

The goal of this jira is to focus on small deployment to reduce the complexity of deploy chukwa
without having to carry the weight of mysql.

> Refactor database to use lightweight scheme
> -------------------------------------------
>                 Key: CHUKWA-307
>                 URL:
>             Project: Hadoop Chukwa
>          Issue Type: Improvement
>          Components: Data Processors, User Interface
>            Reporter: Jiaqi Tan
> Replace MDL + MySQL with lightweight JavaDB or other portable open-source database.

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