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https://issues.apache.org/jira/browse/TAJO-283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852413#comment-13852413
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Hyunsik Choi commented on TAJO-283:
-----------------------------------
Min,
You are right. In Tajo, the the number of files will be at most T x K, where T
is the number of leaf tasks, and K is the number of distinct keys. I confused
the point. Thank you for correcting that point.
> Add Table Partitioning
> ----------------------
>
> Key: TAJO-283
> URL: https://issues.apache.org/jira/browse/TAJO-283
> Project: Tajo
> Issue Type: New Feature
> Components: catalog, physical operator, planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.8-incubating
>
>
> Table partitioning gives many facilities to maintain large tables. First of
> all, it enables the data management system to prune many input data which are
> actually not necessary. In addition, it gives the system more optimization
> opportunities that exploit the physical layouts.
> Basically, Tajo should follow the RDBMS-style partitioning system, including
> range, list, hash, and so on. In order to keep Hive compatibility, we need to
> add Hive partition type that does not exists in existing DBMS systems.
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