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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10834) Support First_value()/last_value() over x preceding and y preceding windowing
Date Fri, 29 May 2015 20:17:17 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14565329#comment-14565329
] 

Aihua Xu commented on HIVE-10834:
---------------------------------

Thanks Ashutosh.

> Support First_value()/last_value() over x preceding and y preceding windowing
> -----------------------------------------------------------------------------
>
>                 Key: HIVE-10834
>                 URL: https://issues.apache.org/jira/browse/HIVE-10834
>             Project: Hive
>          Issue Type: Sub-task
>          Components: PTF-Windowing
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>             Fix For: 1.3.0
>
>         Attachments: HIVE-10834.patch
>
>
> Currently the following query
> {noformat}
> select ts, f, first_value(f) over (partition by ts order by t rows between 2 preceding
and 1 preceding) from over10k limit 100;
> {noformat}
> throws exception:
> {noformat}
> java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
Error while processing row (tag=0) {"key":{"reducesinkkey0":"2013-03-01 09:11:58.703071","reducesinkkey1":-3},"value":{"_col3":0.83}}
>         at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:256)
>         at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:506)
>         at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:447)
>         at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:449)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
processing row (tag=0) {"key":{"reducesinkkey0":"2013-03-01 09:11:58.703071","reducesinkkey1":-3},"value":{"_col3":0.83}}
>         at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:244)
>         ... 3 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Internal Error: cannot generate
all output rows for a Partition
>         at org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.finishPartition(WindowingTableFunction.java:519)
>         at org.apache.hadoop.hive.ql.exec.PTFOperator$PTFInvocation.finishPartition(PTFOperator.java:337)
>         at org.apache.hadoop.hive.ql.exec.PTFOperator.process(PTFOperator.java:114)
>         at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
>         at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
>         at org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:235)
> {noformat}



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