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https://issues.apache.org/jira/browse/HADOOP-1608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12516263
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edward yoon edited comment on HADOOP-1608 at 7/30/07 6:10 AM:
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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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