[jira] [Commented] (HADOOP-10560) Update NativeS3FileSystem to issue copy commands for files with in a directory with a configurable number of threads

["Ted Malaska (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-10560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13986824#comment-13986824 ] 

Ted Malaska commented on HADOOP-10560:
--------------------------------------

If you don't mind I would like to do this Jira.  I'm being set up as a contributor now.  I will assign it to myself as soon as that is finished.

Thanks

> Update NativeS3FileSystem to issue copy commands for files with in a directory with a configurable number of threads
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10560
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10560
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/s3
>            Reporter: Ted Malaska
>            Priority: Minor
>              Labels: performance
>
> In NativeS3FileSystem if you do a copy of a directory it will copy all the files to the new location, but it will do this with one thread. Code is below. This jira will allow a configurable number of threads to be used to issue the copy commands to S3.
> do {
> PartialListing listing = store.list(srcKey, S3_MAX_LISTING_LENGTH, priorLastKey, true);
> for (FileMetadata file : listing.getFiles())
> { keysToDelete.add(file.getKey()); store.copy(file.getKey(), dstKey + file.getKey().substring(srcKey.length())); }
> priorLastKey = listing.getPriorLastKey();
> } while (priorLastKey != null);



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