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From "John Sichi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-705) Let Hive can analyse hbase's tables
Date Mon, 22 Feb 2010 18:56:28 GMT

    [ https://issues.apache.org/jira/browse/HIVE-705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12836828#action_12836828
] 

John Sichi commented on HIVE-705:
---------------------------------

Jonathan, thanks for the input.  I think we should be able to come up with a mapping feature
which encompasses what you've proposed plus what's in HIVE-806 so that it will be up to the
user to decide how to map a particular set of HBase tables into Hive.

We can do this by allowing the HBase table name to be specified as part of mapping it into
Hive.  That way, you can have

Hive t1(c1, c2) -> HBase t.cf1(c1, c2)
Hive t2(c3, c4) -> HBase t.cf2(c3, c4)

or

Hive t(c1,c2,c3,c4) -> HBase t(cf1(c1, c2), cf2(c3, c4))

or

Hive t(cf1map, cf2map) -> HBase t(cf1, cf2)

or variations.  I'm going to write up a proposal in the Hive wiki and solicit feedback.


> Let Hive can analyse hbase's tables
> -----------------------------------
>
>                 Key: HIVE-705
>                 URL: https://issues.apache.org/jira/browse/HIVE-705
>             Project: Hadoop Hive
>          Issue Type: New Feature
>            Reporter: Samuel Guo
>            Assignee: John Sichi
>         Attachments: hbase-0.19.3-test.jar, hbase-0.19.3.jar, HIVE-705.1.patch, HIVE-705_draft.patch,
HIVE-705_revision806905.patch, HIVE-705_revision883033.patch
>
>
> Add a serde over the hbase's tables, so that hive can analyse the data stored in hbase
easily.

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