Harish Butani created HIVE-4186:
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Summary: NPE in ReduceSinkDeDuplication
Key: HIVE-4186
URL: https://issues.apache.org/jira/browse/HIVE-4186
Project: Hive
Issue Type: Bug
Components: Query Processor
Reporter: Harish Butani
When you have a sequence of RedueSinks on constants you get this error:
{noformat}
java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.optimizer.ReduceSinkDeDuplication$ReduceSinkDeduplicateProcFactory$ReducerReducerProc.getPartitionAndKeyColumnMapping(ReduceSinkDeDuplication.java:416)
{noformat}
The e.g. to generate this si:
{noformat}
select p_name from (select p_name from part distribute by 1 sort by 1) p
distribute by 1 sort by 1
{noformat}
Sorry for the contrived e.g., but this actually happens when we stack windowing
clauses (see PTF-Windowing branch)
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