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

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7370?focusedWorklogId=764225&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-764225 ]

ASF GitHub Bot logged work on MAPREDUCE-7370:
---------------------------------------------

                Author: ASF GitHub Bot
            Created on: 29/Apr/22 12:47
            Start Date: 29/Apr/22 12:47
    Worklog Time Spent: 10m 
      Work Description: ashutoshcipher opened a new pull request, #4248:
URL: https://github.com/apache/hadoop/pull/4248

   ### Description of PR
   Parallelize MultipleOutputs#close call
   
   * JIRA: MAPREDUCE-7370
   




Issue Time Tracking
-------------------

            Worklog Id:     (was: 764225)
    Remaining Estimate: 0h
            Time Spent: 10m

> 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
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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