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https://issues.apache.org/jira/browse/HIVE-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13115984#comment-13115984
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jirapos...@reviews.apache.org commented on HIVE-1360:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2078/
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Review request for hive, Carl Steinbach, John Sichi, and Igor Kabiljo.
Summary
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ConstantObjectInspectors were introduced in a previous patch so that UDF's
could have access to constant values at initialize time. This diff adds the
following improvements:
1.) Extends this functionality beyond primitive types to List/Map types.
2.) Fixes a bug in ExprNodeGenericFuncDesc where the constant value would not
propagate beyond one level of evaluation.
3.) Adds a helper class to make functions constant-aware. By inheriting from
this class they return constant OIs if all their arguments are constant, and
they cache the result so that computation is only done during initialize().
Some functions such as ARRAY/IF/MAP have been migrated.
This addresses bug HIVE-1360.
https://issues.apache.org/jira/browse/HIVE-1360
Diffs
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ql/src/java/org/apache/hadoop/hive/ql/plan/ExprNodeGenericFuncDesc.java
7da5d6a
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/ConstantFoldableGenericUDF.java
PRE-CREATION
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFArray.java
1cf97c8
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFArrayContains.java
d60dc86
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFIf.java 9a6a7ff
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFMap.java 3b71c48
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFMapKeys.java
b384717
ql/src/test/queries/clientpositive/constant_prop.q PRE-CREATION
ql/src/test/results/clientpositive/constant_prop.q.out PRE-CREATION
serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorFactory.java
a4689fb
serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorUtils.java
2c1a7e0
serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/StandardConstantListObjectInspector.java
PRE-CREATION
serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/StandardConstantMapObjectInspector.java
PRE-CREATION
Diff: https://reviews.apache.org/r/2078/diff
Testing
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ant test
Thanks,
Jonathan
> Allow UDFs to access constant parameter values at compile time
> --------------------------------------------------------------
>
> Key: HIVE-1360
> URL: https://issues.apache.org/jira/browse/HIVE-1360
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor, UDF
> Affects Versions: 0.5.0
> Reporter: Carl Steinbach
> Assignee: Jonathan Chang
> Fix For: 0.8.0
>
> Attachments: HIVE-1360.2.patch.txt, HIVE-1360.2.test-failures.txt,
> HIVE-1360.3.patch, HIVE-1360.patch, HIVE-1360.patch
>
>
> UDFs should be able to access constant parameter values at compile time.
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