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https://issues.apache.org/jira/browse/HIVE-4209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-4209:
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Attachment: HIVE-4209.D9585.3.patch
navis updated the revision "HIVE-4209 [jira] Cache evaluation result of
deterministic expression and reuse it".
Fix referencing not-evaluated expression
Reviewers: JIRA
REVISION DETAIL
https://reviews.facebook.net/D9585
CHANGE SINCE LAST DIFF
https://reviews.facebook.net/D9585?vs=30531&id=30585#toc
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/ExprNodeEvaluatorHead.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeNullEvaluator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/ExprNodeEvaluatorRef.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
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDF.java
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, HIVE-4209.D9585.2.patch,
> HIVE-4209.D9585.3.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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