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https://issues.apache.org/jira/browse/HIVE-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ning Zhang updated HIVE-1820:
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Attachment: HIVE-1820.patch
attaching HIVE-1820.patch for review.
> Make Hive database data center aware
> ------------------------------------
>
> Key: HIVE-1820
> URL: https://issues.apache.org/jira/browse/HIVE-1820
> Project: Hive
> Issue Type: New Feature
> Reporter: Ning Zhang
> Assignee: Ning Zhang
> Attachments: HIVE-1820.patch
>
>
> In order to support multiple data centers (different DFS, MR clusters) for
> hive, it is desirable to extend Hive database to be data center aware.
> Currently Hive database is a logical concept and has no DFS or MR cluster
> info associated with it. Database has the location property indicating the
> default warehouse directory, but user cannot specify and change it. In order
> to make it data center aware, the following info need to be maintained:
> 1) data warehouse root location which is the default HDFS location for newly
> created tables (default=hive.metadata.warehouse.dir).
> 2) scratch dir which is the HDFS location where MR intermediate files are
> created (default=hive.exec.scratch.dir)
> 3) MR job tracker URI that jobs should be submitted to
> (default=mapred.job.tracker)
> 4) hadoop (bin) dir ($HADOOP_HOME/bin/hadoop)
> These parameters should be saved in database.parameters (key, value) pair and
> they overwrite the jobconf parameters (so if the default database has no
> parameter it will get it from the hive-default.xml or hive-site.xml as it is
> now).
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