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Posted to issues@tajo.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2014/06/07 07:42:01 UTC
[jira] [Commented] (TAJO-866) COUNT DISTINCT with other aggregation
function throws ClassCastException.
[ https://issues.apache.org/jira/browse/TAJO-866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14020718#comment-14020718 ]
ASF GitHub Bot commented on TAJO-866:
-------------------------------------
GitHub user babokim opened a pull request:
https://github.com/apache/tajo/pull/36
TAJO-866: COUNT DISTINCT with other aggregation function throws ClassCastException.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/babokim/tajo TAJO-866
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/tajo/pull/36.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #36
----
commit 1807176afefb6d1f3beff5d012328e743b83e031
Author: 김형준 <ba...@babokim-macbook-pro.local>
Date: 2014-06-07T05:30:42Z
TAJO-866: COUNT DISTINCT with other aggregation function throws ClassCastException.
commit b1d0045fc6c26f3abd682f2344f75e35baef2b34
Author: 김형준 <ba...@babokim-macbook-pro.local>
Date: 2014-06-07T05:31:32Z
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/tajo
----
> COUNT DISTINCT with other aggregation function throws ClassCastException.
> -------------------------------------------------------------------------
>
> Key: TAJO-866
> URL: https://issues.apache.org/jira/browse/TAJO-866
> Project: Tajo
> Issue Type: Bug
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
> Priority: Minor
>
> I tested with the following data and query.
> {noformat}
> default> select * from table1;
> id,code,qty
> -------------------------------
> 1,a,3
> 1,a,4
> 1,b,5
> 2,a,1
> 2,c,2
> 2,d,3
> default> select id, count(distinct code), avg(qty) from table101 group by id;
> 2014-06-05 21:29:56,960 ERROR: org.apache.tajo.worker.Task (run(390)) - org.apache.tajo.datum.NullDatum cannot be cast to org.apache.tajo.datum.ProtobufDatum
> java.lang.ClassCastException: org.apache.tajo.datum.NullDatum cannot be cast to org.apache.tajo.datum.ProtobufDatum
> at org.apache.tajo.engine.function.builtin.AvgLong.merge(AvgLong.java:66)
> at org.apache.tajo.engine.eval.AggregationFunctionCallEval.merge(AggregationFunctionCallEval.java:59)
> at org.apache.tajo.engine.planner.physical.SortAggregateExec.next(SortAggregateExec.java:77)
> at org.apache.tajo.engine.planner.physical.DistinctGroupbySortAggregationExec.next(DistinctGroupbySortAggregationExec.java:88)
> at org.apache.tajo.engine.planner.physical.StoreTableExec.next(StoreTableExec.java:77)
> at org.apache.tajo.worker.Task.run(Task.java:382)
> at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:406)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
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