Pala M Muthaia created HIVE-7882:
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Summary: Multiple occurrences of same aggregate function with
different casing results in error
Key: HIVE-7882
URL: https://issues.apache.org/jira/browse/HIVE-7882
Project: Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 0.13.1
Reporter: Pala M Muthaia
Priority: Minor
The query
select sum(x), SUM(x) from t;
throws error shown in the stack below but the same query with matching case for
the aggregate function succeeds
select sum(x), sum(x) from t;
This is a regression from Hive 0.12.
While the above is a contrived example to showcase the behavior, the use case
not artificial. In our case, we had "select sum(x) as x, SUM(x) + sum(y) as
total...." in a complex query.
This seems related to fix for HIVE-3107, which de-duplicated occurrences of
aggregate functions while generating reduce sink operator. However, the number
of elements in the aggregationTrees dictionary, which is not similarly
deduplicated, was used to infer total number of aggregate function in the
query, leading to a mismatch causing this error.
Error stack below.
-----
FAILED: IndexOutOfBoundsException Index: 1, Size: 1
14/08/20 14:52:33 ERROR ql.Driver: FAILED: IndexOutOfBoundsException Index: 1,
Size: 1
java.lang.IndexOutOfBoundsException: Index: 18, Size: 18
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanReduceSinkOperator(SemanticAnalyzer.java:4121)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genGroupByPlanMapAggrNoSkew(SemanticAnalyzer.java:5098)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:8154)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:8994)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:8882)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:8903)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:9271)
at
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:327)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:428)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:323)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:984)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1051)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:917)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:907)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:270)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:222)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:425)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:794)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:688)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:627)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
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