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From "jiraposter@reviews.apache.org (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2020) Create a separate namespace for Hive variables
Date Sat, 20 Aug 2011 01:13:29 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13088100#comment-13088100
] 

jiraposter@reviews.apache.org commented on HIVE-2020:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1607/
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Review request for hive and Carl Steinbach.


Summary
-------

1. Added support  hivevar
2. Removed dependency on new class
3. Added test case


This addresses bug HIVE-2020.
    https://issues.apache.org/jira/browse/HIVE-2020


Diffs
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  cli/src/java/org/apache/hadoop/hive/cli/CliDriver.java a2976b5 
  cli/src/java/org/apache/hadoop/hive/cli/OptionsProcessor.java 90084ed 
  ql/src/java/org/apache/hadoop/hive/ql/parse/VariableSubstitution.java e203dda 
  ql/src/java/org/apache/hadoop/hive/ql/processors/SetProcessor.java 97fa1ab 
  ql/src/java/org/apache/hadoop/hive/ql/session/SessionState.java 6a6e8e8 
  ql/src/test/queries/clientpositive/set_variable_sub.q PRE-CREATION 
  ql/src/test/results/clientpositive/set_variable_sub.q.out PRE-CREATION 

Diff: https://reviews.apache.org/r/1607/diff


Testing
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Thanks,

Vaibhav



> 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
>         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 'var 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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