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https://issues.apache.org/jira/browse/HIVE-14951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143679#comment-16143679
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Zoltan Haindrich commented on HIVE-14951:
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I think there are 2 issues here: there is one which affect the query plan
printout - and gives misleading plan description ; by adding both Map's below
the same groupby
the other is the issue which is because the second gby is not able to return
the data for tag=1; I suspect that the purpose of the DUMMY_STORE operator
would be to hide this tweak...however I don't see it during execution...
> ArrayIndexOutOfBoundsException in GroupByOperator
> -------------------------------------------------
>
> Key: HIVE-14951
> URL: https://issues.apache.org/jira/browse/HIVE-14951
> Project: Hive
> Issue Type: Bug
> Reporter: Zhiyuan Yang
>
> Engine:
> Tez
> Query:
> select * from (select distinct a from f16) as f16, (select distinct a from
> f1) as fprime where f16.a = fprime.a;
> Table:
> create table f1 (a int, b string);
> create table f16 (a int, b string);
> Config:
> set hive.auto.convert.sortmerge.join=true;
> set hive.auto.convert.join=false;
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