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https://issues.apache.org/jira/browse/HIVE-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081268#comment-13081268
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jirapos...@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/1324/
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Review request for hive and Carl Steinbach.
Summary
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Create a separate namespace for Hive variables.
Added support for:
1. -d and --define;
2. set define:var=var_value; // To set the variable
3. set -v;
4. set define:var; // To print the variable
Thanks
Vaibhav
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
Diff: https://reviews.apache.org/r/1324/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.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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