Sambavi Muthukrishnan created HIVE-3089:
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Summary: Support for add/drop partition and querying of static
table links
Key: HIVE-3089
URL: https://issues.apache.org/jira/browse/HIVE-3089
Project: Hive
Issue Type: Improvement
Components: Metastore, Query Processor
Affects Versions: 0.10.0
Reporter: Sambavi Muthukrishnan
Assignee: Sambavi Muthukrishnan
JIRA HIVE-2989 introduced the ability to create, drop and desc table links in
Hive. This improvement adds on to table links, and allows the ability to:
a) Add partition to a table link
ALTER TABLELINK T@Y ADD [IF NOT EXISTS] PARTITION partition_spec PARTITION
partition_spec ...
The partition being added must be available on the source of the link table
T since it is a link not a real partition.
b) Drop partition on a table link
ALTER TABLELINK T@Y DROP [IF EXISTS] PARTITION partition_spec, PARTITION
partition_spec, ...
This drop will not impact the source table of the link
c) Query table links using T@Y syntax:
SELECT DISTINCT user from T@Y where partition_key < 'val'
This query will query the partitions on the source table of the table link.
a) Set properties on a tablelink
ALTER TABLELINK T@Y LINKPROPERTIES(PROPERTY='value');
Once this patch is submitted, in conjunction with HIVE_2989, a user can create
a link, add and drop partitions from it and query the data in the table link.
Dynamic link support is being added in a separate JIRA.
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