[jira] [Resolved] (TAJO-978) RoundFloat8 should return Float8Datum type.

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAJO-978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi resolved TAJO-978.
-------------------------------

    Resolution: Fixed

committed. Thank you for your contribution!

> RoundFloat8 should return Float8Datum type.
> -------------------------------------------
>
>                 Key: TAJO-978
>                 URL: https://issues.apache.org/jira/browse/TAJO-978
>             Project: Tajo
>          Issue Type: Bug
>            Reporter: Hyoungjun Kim
>            Assignee: Hyoungjun Kim
>            Priority: Minor
>             Fix For: 0.9.0
>
>
> Currently RoundFloat8 function returns TextDatum. So the following query occurs InvalidOperationException.
> {code:sql}
>  select * from (
>     select n_nationkey as key, 
>               case when n_nationkey < 6 
>                   then round((n_nationkey * 100 / 2.123)::float4 / (n_regionkey + 1)::float4, 2) 
>                   else 100.0 
>               end as val 
>       from nation) a 
> order by a.key
> {code}
> {noformat}
> 2014-07-25 16:40:08,418 ERROR: org.apache.tajo.worker.Task (run(432)) - Cannot compare to FLOAT8 type datum
> org.apache.tajo.exception.InvalidOperationException: Cannot compare to FLOAT8 type datum
> 	at org.apache.tajo.datum.TextDatum.compareTo(TextDatum.java:113)
> 	at org.apache.tajo.storage.TableStatistics.analyzeField(TableStatistics.java:91)
> 	at org.apache.tajo.storage.RawFile$RawFileAppender.addTuple(RawFile.java:600)
> 	at org.apache.tajo.engine.planner.physical.RangeShuffleFileWriteExec.next(RangeShuffleFileWriteExec.java:101)
> 	at org.apache.tajo.worker.Task.run(Task.java:425)
> 	at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:406)
> 	at java.lang.Thread.run(Thread.java:744)
> {noformat}



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