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

["Ashutosh Gupta (Jira)" <ji...@apache.org>]

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

Ashutosh Gupta reassigned MAPREDUCE-7370:
-----------------------------------------

    Assignee: Ashutosh Gupta  (was: Ravuri Sushma sree)

> 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: Ashutosh Gupta
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  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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