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From "Nitay Joffe (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (HIVE-3752) Add a non-sql API in hive to access data.
Date Fri, 08 Mar 2013 20:34:14 GMT

     [ https://issues.apache.org/jira/browse/HIVE-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nitay Joffe reopened HIVE-3752:
-------------------------------


Didn't mean to close. The separate library is here: https://github.com/facebook/hive-io-experimental
If there is still interest to fold this into Hive I'd be happy to support it going in.
                
> Add a non-sql API in hive to access data.
> -----------------------------------------
>
>                 Key: HIVE-3752
>                 URL: https://issues.apache.org/jira/browse/HIVE-3752
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Nitay Joffe
>            Assignee: Nitay Joffe
>
> We would like to add an input/output format for accessing Hive data in Hadoop directly
without having to use e.g. a transform. Using a transform
> means having to do a whole map-reduce step with its own disk accesses and its imposed
structure. It also means needing to have Hive be the base infrastructure for the entire system
being developed which is not the right fit as we only need a small part of it (access to the
data).
> So we propose adding an API level InputFormat and OutputFormat to Hive that will make
it trivially easy to select a table with partition spec and read from / write to it. We chose
this design to make it compatible with Hadoop so that existing systems that work with Hadoop's
IO API will just work out of the box.
> We need this system for the Giraph graph processing system (http://giraph.apache.org/)
as running graph jobs which read/write from Hive is a common use case.
> [~namitjain] [~aching] [~kevinwilfong] [~apresta]
> Input-side (HiveApiInputFormat) review: https://reviews.facebook.net/D7401

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