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Posted to common-issues@hadoop.apache.org by "Aaron Fabbri (JIRA)" <ji...@apache.org> on 2017/09/06 01:52:00 UTC
[jira] [Comment Edited] (HADOOP-13421) Switch to v2 of the S3 List
Objects API in S3A
[ https://issues.apache.org/jira/browse/HADOOP-13421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16154691#comment-16154691 ]
Aaron Fabbri edited comment on HADOOP-13421 at 9/6/17 1:51 AM:
---------------------------------------------------------------
Attaching v2 patch.
I ended up using a separate class that can hold either version for the list objects request and response. Always translating to the SDK's v2 objects saved a little garbage but ended up being error-prone.
All integration tests passed in us-west-2. Rerunning right now with dynamodb.
was (Author: fabbri):
Attaching v2 patch.
I ended up using a separate class that for the list objects request and response. Always translating to the SDK's v2 objects saved a little garbage but ended up being error-prone.
All integration tests passed in us-west-2. Rerunning right now with dynamodb.
> Switch to v2 of the S3 List Objects API in S3A
> ----------------------------------------------
>
> Key: HADOOP-13421
> URL: https://issues.apache.org/jira/browse/HADOOP-13421
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.8.0
> Reporter: Steven K. Wong
> Assignee: Aaron Fabbri
> Priority: Minor
> Attachments: HADOOP-13421.002.patch, HADOOP-13421-HADOOP-13345.001.patch
>
>
> Unlike [version 1|http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html] of the S3 List Objects API, [version 2|http://docs.aws.amazon.com/AmazonS3/latest/API/v2-RESTBucketGET.html] by default does not fetch object owner information, which S3A doesn't need anyway. By switching to v2, there will be less data to transfer/process. Also, it should be more robust when listing a versioned bucket with "a large number of delete markers" ([according to AWS|https://aws.amazon.com/releasenotes/Java/0735652458007581]).
> Methods in S3AFileSystem that use this API include:
> * getFileStatus(Path)
> * innerDelete(Path, boolean)
> * innerListStatus(Path)
> * innerRename(Path, Path)
> Requires AWS SDK 1.10.75 or later.
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