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From "edward yoon (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (HADOOP-1608) [HbaseShell] Relational Algrebra Operators
Date Mon, 30 Jul 2007 13:10:52 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12516263
] 

edward yoon edited comment on HADOOP-1608 at 7/30/07 6:10 AM:
--------------------------------------------------------------

I am always concerned about implementing SQL-like syntax, familiar to many users.
But.....   There are many reasons why I chose to implement the syntax. 

 * Consideration for all commands such as data relational, aggregation, and analysis processing
management.
 * Differences between RDBMS and Multi Dimensional Model.

I think it is important to make users more aware of HBase's data model characteristics.
That way, they should be able to use HBase at its full potential.

I have introduced multi dimensional model based data handling examples on distributed computing
platform(Hadoop+Mapreduce) to application developers, using SQL-like ysntax examples.
In the end, it has create more confusion among them, as most of them tried to relate it to
traditional RDMBS.

Also besides relational operation, I will add aggregation and anlaysis functions,
and the will be considerate of all the grammars to make the whole thing more consistent.

I have a plan to shore up wiki pages and will finish implementing the planned features.
I hope to get more advice and tips from many of you people and make it up to 0.0.2 version.

Thank you.


 was:
I am always concerned about implementing SQL-like syntax, familiar to many users.
But.....   There are many reasons why I chose to implement the syntax. 

 * Consideration for all commands such as data relational, aggregation, and processing management.
 * Differences between RDBMS and Multi Dimensional Model.

I think it is important to make users more aware of HBase's data model characteristics.
That way, they should be able to use HBase at its full potential.

I have introduced multi dimensional model(Hadoop + Hbase + MapReduce) as a sort of sistributed
computing platform to application developers, using SQL-like ysntax examples.
In the end, it has create more confusion among them, as most of them tried to relate it to
traditional RDMBS.

Also besides relational operation, I will add aggregation and anlaysis functions,
and the will be considerate of all the grammars to make the whole thing more consistent.

I have a plan to shore up wiki pages and will finish implementing the planned features.
I hope to get more advice and tips from many of you people and make it up to 0.0.2 version.

Thank you.

> [HbaseShell] Relational Algrebra Operators
> ------------------------------------------
>
>                 Key: HADOOP-1608
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1608
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: contrib/hbase
>         Environment: All environments 
>            Reporter: edward yoon
>            Priority: Minor
>             Fix For: 0.14.0
>
>         Attachments: shell_r_operators_v01.patch, shell_v02.patch, shell_v03.patch, shell_v04.patch,
shell_v05.patch
>
>
> Development of relational algebra operators has begun.
>  * Projection 
>  * Selection 
>  * Product 
>  * Rename
>  * Group
>  * Sort

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