Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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Reviewed
Description
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'