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https://issues.apache.org/jira/browse/HIVE-4209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13640354#comment-13640354
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Phabricator commented on HIVE-4209:
-----------------------------------
njain has commented on the revision "HIVE-4209 [jira] Cache evaluation result
of deterministic expression and reuse it".
Can you change the default to true ?
In hive-default.xml.template, can you explain the types of
queries/expressions that will benefit
INLINE COMMENTS
common/src/java/org/apache/hadoop/hive/conf/HiveConf.java:638 Can you explain
this new parameter in hive-default.xml.template ?
REVISION DETAIL
https://reviews.facebook.net/D9585
To: JIRA, navis
Cc: njain
> Cache evaluation result of deterministic expression and reuse it
> ----------------------------------------------------------------
>
> Key: HIVE-4209
> URL: https://issues.apache.org/jira/browse/HIVE-4209
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
> Attachments: HIVE-4209.D9585.1.patch, HIVE-4209.D9585.2.patch,
> HIVE-4209.D9585.3.patch, HIVE-4209.D9585.4.patch
>
>
> For example,
> {noformat}
> select key from src where key + 1 > 100 AND key + 1 < 200 limit 3;
> {noformat}
> key + 1 need not to be evaluated twice.
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