[
https://issues.apache.org/jira/browse/TAJO-283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13848822#comment-13848822
]
Hyunsik Choi commented on TAJO-283:
-----------------------------------
Hi Min,
Now, we assume that one hdfs directory is one partition. First of all, we will
support the hive-style partition. Later, we will support range/interval
partition, list, hash and their composition partition.
For hive-style partition, ColumnPartitionedTableStoreExec was implmented
inTAJO-329. Tajo already uses hash, range shuffles for distributed groupby,
join, and sort. I'm expecting that we can easily implement other types of
partitions.
> 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.
--
This message was sent by Atlassian JIRA
(v6.1.4#6159)
