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From "Ted Malaska (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10560) Update NativeS3FileSystem to issue copy commands for files with in a directory with a configurable number of threads
Date Thu, 01 May 2014 21:06:16 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Malaska updated HADOOP-10560:
---------------------------------

    Attachment: HADOOP-10560.patch

First attempt to added threading to copying files in the case a directory is renamed.

I just use and executorService with futures.  Then try to get all the futures before preforming
the normal deletes that were there before.

This is ready for review.

Thanks again

> 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
>            Assignee: Ted Malaska
>            Priority: Minor
>              Labels: performance
>         Attachments: HADOOP-10560.patch
>
>
> 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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