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https://issues.apache.org/jira/browse/HIVE-1096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886918#action_12886918
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HBase Review Board commented on HIVE-1096:
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Message from: "Carl Steinbach" <[email protected]>
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This is an automatically generated e-mail. To reply, visit:
http://review.hbase.org/r/229/
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(Updated 2010-07-09 15:10:54.970189)
Review request for Hive Developers.
Changes
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Updated the diff with
http://issues.apache.org/jira/secure/attachment/12449054/hive-1096-12.patch.txt
Summary
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Hive Variables
This addresses bug HIVE-1096.
http://issues.apache.org/jira/browse/HIVE-1096
Diffs (updated)
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trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java 955109
trunk/conf/hive-default.xml 955109
trunk/ql/src/java/org/apache/hadoop/hive/ql/Driver.java 955109
trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/VariableSubstitution.java
PRE-CREATION
trunk/ql/src/java/org/apache/hadoop/hive/ql/processors/AddResourceProcessor.java
955109
trunk/ql/src/java/org/apache/hadoop/hive/ql/processors/DeleteResourceProcessor.java
955109
trunk/ql/src/java/org/apache/hadoop/hive/ql/processors/DfsProcessor.java
955109
trunk/ql/src/java/org/apache/hadoop/hive/ql/processors/SetProcessor.java
955109
trunk/ql/src/test/queries/clientpositive/set_processor_namespaces.q
PRE-CREATION
trunk/ql/src/test/results/clientpositive/set_processor_namespaces.q.out
PRE-CREATION
Diff: http://review.hbase.org/r/229/diff
Testing
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Thanks,
Edward
> Hive Variables
> --------------
>
> Key: HIVE-1096
> URL: https://issues.apache.org/jira/browse/HIVE-1096
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Edward Capriolo
> Assignee: Edward Capriolo
> Fix For: 0.6.0, 0.7.0
>
> Attachments: 1096-9.diff, hive-1096-10-patch.txt,
> hive-1096-11-patch.txt, hive-1096-12.patch.txt, hive-1096-2.diff,
> hive-1096-7.diff, hive-1096-8.diff, hive-1096.diff
>
>
> From mailing list:
> --Amazon Elastic MapReduce version of Hive seems to have a nice feature
> called "Variables." Basically you can define a variable via command-line
> while invoking hive with -d DT=2009-12-09 and then refer to the variable via
> ${DT} within the hive queries. This could be extremely useful. I can't seem
> to find this feature even on trunk. Is this feature currently anywhere in the
> roadmap?--
> This could be implemented in many places.
> A simple place to put this is
> in Driver.compile or Driver.run we can do string substitutions at that level,
> and further downstream need not be effected.
> There could be some benefits to doing this further downstream, parser,plan.
> but based on the simple needs we may not need to overthink this.
> I will get started on implementing in compile unless someone wants to discuss
> this more.
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