[jira] [Commented] (HIVE-6700) In some queries inputs are closed on Tez before the operator pipeline is flushed

["Siddharth Seth (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-6700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13941039#comment-13941039 ] 

Siddharth Seth commented on HIVE-6700:
--------------------------------------

Looks good, only question I have is whether the try block needs to enclose setting up Inputs in the ReduceProcessor.
{code}
  if(shuffleInputs.size() == 1){
        //no merging of inputs required
        kvsReader = (KeyValuesReader) shuffleInputs.get(0).getReader();
      }else {
        //get a sort merged input
        kvsReader = new InputMerger(shuffleInputs);
      }
{code}

> In some queries inputs are closed on Tez before the operator pipeline is flushed
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-6700
>                 URL: https://issues.apache.org/jira/browse/HIVE-6700
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Gunther Hagleitner
>            Assignee: Gunther Hagleitner
>         Attachments: HIVE-6700.1.patch
>
>
> Group by operators won't flush their last row until operator is closed. In Tez it's possible that the input is already closed at this point.



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