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From "Nick Dimiduk (JIRA)" <>
Subject [jira] [Updated] (HIVE-6584) Add HiveHBaseTableSnapshotInputFormat
Date Tue, 12 Aug 2014 19:33:14 GMT


Nick Dimiduk updated HIVE-6584:

    Release Note: 
Hive can now execute queries against HBase table snapshots. This feature is available for
any table defined using the HBaseStorageHandler. It requires at least HBase 0.98.3.

To query against a snapshot instead of the online table, specify the snapshot name via
The snapshot will be restored into a unique directory under /tmp. This location can be overridden
by setting a path via hive.hbase.snapshot.restoredir.

> Add HiveHBaseTableSnapshotInputFormat
> -------------------------------------
>                 Key: HIVE-6584
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: HBase Handler
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>              Labels: TODOC14
>             Fix For: 0.14.0
>         Attachments: HIVE-6584.0.patch, HIVE-6584.1.patch, HIVE-6584.10.patch, HIVE-6584.11.patch,
HIVE-6584.12.patch, HIVE-6584.13.patch, HIVE-6584.14.patch, HIVE-6584.2.patch, HIVE-6584.3.patch,
HIVE-6584.4.patch, HIVE-6584.5.patch, HIVE-6584.6.patch, HIVE-6584.7.patch, HIVE-6584.8.patch,
> HBASE-8369 provided mapreduce support for reading from HBase table snapsopts. This allows
a MR job to consume a stable, read-only view of an HBase table directly off of HDFS. Bypassing
the online region server API provides a nice performance boost for the full scan. HBASE-10642
is backporting that feature to 0.94/0.96 and also adding a {{mapred}} implementation. Once
that's available, we should add an input format. A follow-on patch could work out how to integrate
this functionality into the StorageHandler, similar to how HIVE-6473 integrates the HFileOutputFormat
into existing table definitions.

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