Details
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Type:
New Feature
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 0.8.0
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Component/s: Metastore, Query Processor
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Labels:None
Description
This is an enhancement request to add export/import features to hive.
With this language extension, the user can export the data of the table - which may be located in different hdfs locations in case of a partitioned table - as well as the metadata of the table into a specified output location. This output location can then be moved over to another different hadoop/hive instance and imported there.
This should work independent of the source and target metastore dbms used; for instance, between derby and mysql.
For partitioned tables, the ability to export/import a subset of the partition must be supported.
Howl will add more features on top of this: The ability to create/use the exported data even in the absence of hive, using MR or Pig. Please see http://wiki.apache.org/pig/Howl/HowlImportExport for these details.