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https://issues.apache.org/jira/browse/HIVE-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095918#comment-13095918
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Hudson commented on HIVE-2020:
------------------------------
Integrated in Hive-trunk-h0.21 #928 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/928/])
HIVE-2020. Create a separate namespace for Hive variables (Vaibhav Aggarwal
via cws)
cws : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1164319
Files :
* /hive/trunk/cli/src/java/org/apache/hadoop/hive/cli/CliDriver.java
* /hive/trunk/cli/src/java/org/apache/hadoop/hive/cli/OptionsProcessor.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/VariableSubstitution.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/processors/SetProcessor.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/session/SessionState.java
* /hive/trunk/ql/src/test/queries/clientpositive/set_variable_sub.q
* /hive/trunk/ql/src/test/results/clientpositive/set_variable_sub.q.out
> Create a separate namespace for Hive variables
> ----------------------------------------------
>
> Key: HIVE-2020
> URL: https://issues.apache.org/jira/browse/HIVE-2020
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Carl Steinbach
> Assignee: Vaibhav Aggarwal
> Fix For: 0.8.0
>
> Attachments: HIVE-2020-2.patch, HIVE-2020-3.patch, HIVE-2020.patch
>
>
> Support for variable substitution was added in HIVE-1096. However, variable
> substitution was implemented by reusing the HiveConf namespace, so there is
> no separation between Hive configuration properties and Hive variables.
> This ticket encompasses the following enhancements:
> * Create a separate namespace for managing Hive variables.
> * Add support for setting variables on the command line via '-hivevar x=y'
> * Add support for setting variables through the CLI via 'set hivevar:x=y'
> * Add support for referencing variables in statements using either
> '${hivevar:var_name}' or '${var_name}'
> * Provide a means for differentiating between hiveconf, hivevar, system, and
> environment properties in the output of 'set -v'
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