J.P Feng created SPARK-19037:
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Summary: Run count(distinct name) from sub query found some errors
Key: SPARK-19037
URL: https://issues.apache.org/jira/browse/SPARK-19037
Project: Spark
Issue Type: Bug
Components: Spark Shell, SQL
Affects Versions: 2.1.0
Environment: spark 2.1.0, scala 2.11
Reporter: J.P Feng
when i use spark-shell or spark-sql to execute count(distinct name) from
subquery, some errors occur:
select count(distinct name) from (select * from mytest limit 10) as a
if i do this in hive-server2, i can get the correct result.
if i just execute select count(name) from (select * from mytest limit 10) as a,
i can also get the right result.
besides, i found the same errors when i use max(), distinct(),groupby() with
subquery.
I think there maybe some bugs when doing key-reduce jobs with subquery.
I will add the errors in new comment.
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