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https://issues.apache.org/jira/browse/HIVE-2512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146377#comment-13146377
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jirapos...@reviews.apache.org commented on HIVE-2512:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2479/
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(Updated 2011-11-08 16:03:21.111741)
Review request for hive and Ning Zhang.
Changes
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select key, count(1) cnt from src group by key order by count(1) limit 10;
Here order by is requested with the aggregate function in execution flow of
this query in
org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory.DefaultExprProcessor.getXpathOrFuncExprNodeDesc(ASTNode,
boolean, ArrayList<ExprNodeDesc>, TypeCheckCtx) while constructing
ExprNodeGenericFuncDesc it is expecting GenericUDF() but here it is requested
with aggregate function so it is returning null and it is throwing
NullPointerException
So before constructing ExprNodeGenericFuncDesc added a check if it is UDAF
throw exception
And it should work with below queries ,
select key,min(key) from src group by key having min(key) > 100;
select key,min(key) as mininum from src group by key order by mininum;
Summary
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SemanticAnalyzer.genReduceSinkPlan() added a function validation check for
orderby and sortby in the same flow clusterby also executing so it is throwing
execption for the clusterby also.
Orderby and Sortby wont support the functions so need to add the function
validation check.
Now validation check is modified like it should check only for the orderby and
sortby.
This addresses bug HIVE-2512.
https://issues.apache.org/jira/browse/HIVE-2512
Diffs (updated)
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trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/ErrorMsg.java 1198626
trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/TypeCheckProcFactory.java
1198626
trunk/ql/src/test/queries/clientnegative/orderby_function.q PRE-CREATION
trunk/ql/src/test/queries/clientnegative/orderby_function1.q PRE-CREATION
trunk/ql/src/test/queries/clientnegative/orderby_function2.q PRE-CREATION
trunk/ql/src/test/queries/clientnegative/sortby_function.q PRE-CREATION
trunk/ql/src/test/queries/clientpositive/orderby_function.q PRE-CREATION
trunk/ql/src/test/results/clientnegative/orderby_function.q.out PRE-CREATION
trunk/ql/src/test/results/clientnegative/orderby_function1.q.out PRE-CREATION
trunk/ql/src/test/results/clientnegative/orderby_function2.q.out PRE-CREATION
trunk/ql/src/test/results/clientnegative/sortby_function.q.out PRE-CREATION
trunk/ql/src/test/results/clientpositive/orderby_function.q.out PRE-CREATION
Diff: https://reviews.apache.org/r/2479/diff
Testing
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All unit tests passed
Thanks,
chinna
> After HIVE-2145, Hive disallow any use of function in cluster-by clause
> -----------------------------------------------------------------------
>
> Key: HIVE-2512
> URL: https://issues.apache.org/jira/browse/HIVE-2512
> Project: Hive
> Issue Type: Bug
> Reporter: Ning Zhang
> Assignee: Chinna Rao Lalam
> Attachments: HIVE-2512.1.patch, HIVE-2512.2.patch, HIVE-2512.patch
>
>
> After HIVE-2145, the following query returns a semantic analysis error:
> FROM src SELECT * cluster by rand();
> FAILED: Error in semantic analysis: functions are not supported in order by
> Looking back at HIVE-2145, it's clear that the patch is more restrictive than
> necessary.
> Chinna, are you able to work on it? Please let me know if you don't have
> cycles to do it now.
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