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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2016/11/16 20:59:58 UTC

[jira] [Resolved] (HBASE-4587) HBase MR support for multiple tables as input

     [ https://issues.apache.org/jira/browse/HBASE-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-4587.
--------------------------
    Resolution: Duplicate

Implemented elsewhere. See MultiTableInputFormat and MultiTableOutputFormat.

> HBase MR support for multiple tables as input
> ---------------------------------------------
>
>                 Key: HBASE-4587
>                 URL: https://issues.apache.org/jira/browse/HBASE-4587
>             Project: HBase
>          Issue Type: Improvement
>          Components: mapreduce
>    Affects Versions: 0.90.3
>            Reporter: Rajeev Rao
>
> Some requirements:
>  - Being able to have multiple tables as your input path
>  - Being able to filter on specific columns/column families
>  - Providing the source location (table/row/column) to the results
>  - Multiple clusters
>  - Different schemas.
> Overall this seems difficult for now so I am going to punt on it. On the other hand it would be easy enough to write all of the MR values into an intermediate table and then work from there.



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