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https://issues.apache.org/jira/browse/HIVE-10834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14565235#comment-14565235
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Ashutosh Chauhan commented on HIVE-10834:
-----------------------------------------
+1
> 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
> 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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