[jira] [Updated] (MAPREDUCE-7370) Parallelize MultipleOutputs#close call

["Prabhu Joseph (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prabhu Joseph updated MAPREDUCE-7370:
-------------------------------------
    Description: 
This call takes more time when there are lot of files to close and there is a high latency to close. Parallelize MultipleOutputs#close call to improve the speed.

{code}
  public void close() throws IOException {
    for (RecordWriter writer : recordWriters.values()) {
      writer.close(null);
    }
  }
{code}

Idea is from [~stevel@apache.org]

  was:
This call takes more time when there are lot of files to close and there is a high latency to close. Parallelize MultipleOutputs#close call to improve the speed.

{code}
  public void close() throws IOException {
    for (RecordWriter writer : recordWriters.values()) {
      writer.close(null);
    }
  }
{code}


> Parallelize MultipleOutputs#close call
> --------------------------------------
>
>                 Key: MAPREDUCE-7370
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7370
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 3.3.0
>            Reporter: Prabhu Joseph
>            Assignee: Ravuri Sushma sree
>            Priority: Major
>
> This call takes more time when there are lot of files to close and there is a high latency to close. Parallelize MultipleOutputs#close call to improve the speed.
> {code}
>   public void close() throws IOException {
>     for (RecordWriter writer : recordWriters.values()) {
>       writer.close(null);
>     }
>   }
> {code}
> Idea is from [~stevel@apache.org]



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