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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12020) Support AWS S3 reduced redundancy storage class
Date Thu, 15 Dec 2016 12:50:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15751289#comment-15751289

Steve Loughran commented on HADOOP-12020:

The AWS SDK version has been increased, if someone wants to look at this.

> Support AWS S3 reduced redundancy storage class
> -----------------------------------------------
>                 Key: HADOOP-12020
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12020
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/s3
>    Affects Versions: 2.7.0
>         Environment: Hadoop on AWS
>            Reporter: Yann Landrin-Schweitzer
> Amazon S3 uses, by default, the NORMAL_STORAGE class for s3 objects.
> This offers, according to Amazon's material, 99.99999999% reliability.
> For many applications, however, the 99.99% reliability offered by the REDUCED_REDUNDANCY
storage class is amply sufficient, and comes with a significant cost saving.
> HDFS, when using the legacy s3n protocol, or the new s3a scheme, should support overriding
the default storage class of created s3 objects so that users can take advantage of this cost
> This would require minor changes of the s3n and s3a drivers, using 
> a configuration property fs.s3n.storage.class to override the default storage when desirable.

> This override could be implemented in Jets3tNativeFileSystemStore with:
>       S3Object object = new S3Object(key);
>       ...
>       if(storageClass!=null)  object.setStorageClass(storageClass);
> It would take a more complex form in s3a, e.g. setting:
>     InitiateMultipartUploadRequest initiateMPURequest =
>         new InitiateMultipartUploadRequest(bucket, key, om);
>     if(storageClass !=null ) {
>         initiateMPURequest = initiateMPURequest.withStorageClass(storageClass);
>     }
> and similar statements in various places.

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