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Posted to dev@hive.apache.org by "Phabricator (JIRA)" <ji...@apache.org> on 2013/03/21 06:27:16 UTC
[jira] [Updated] (HIVE-4209) Cache evaluation result of
deterministic expression and reuse it
[ https://issues.apache.org/jira/browse/HIVE-4209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phabricator updated HIVE-4209:
------------------------------
Attachment: HIVE-4209.D9585.1.patch
navis requested code review of "HIVE-4209 [jira] Cache evaluation result of deterministic expression and reuse it".
Reviewers: JIRA
HIVE-4209 Cache evaluation result of deterministic expression and reuse it
For example,
select key from src where key + 1 > 100 AND key + 1 < 200 limit 3;
key + 1 need not to be evaluated twice.
TEST PLAN
EMPTY
REVISION DETAIL
https://reviews.facebook.net/D9585
AFFECTED FILES
common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeColumnEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeConstantEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeEvaluatorFactory.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeEvaluatorRef.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeNullEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeFieldEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeGenericFuncEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/FilterOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/JoinUtil.java
ql/src/java/org/apache/hadoop/hive/ql/exec/SelectOperator.java
MANAGE HERALD RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/22905/
To: JIRA, navis
> 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
>
>
> 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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