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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13421) Switch to v2 of the S3 List Objects API in S3A
Date Fri, 08 Sep 2017 11:27:01 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16158488#comment-16158488
] 

Hudson commented on HADOOP-13421:
---------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12822 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/12822/])
HADOOP-13421. Switch to v2 of the S3 List Objects API in S3A. (stevel: rev 5bbca80428ffbe776650652de86a3bba885edb31)
* (edit) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/InconsistentAmazonS3Client.java
* (edit) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java
* (add) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ListResult.java
* (edit) hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
* (add) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3ListRequest.java
* (edit) hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/TestS3AGetFileStatus.java
* (edit) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java
* (edit) hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3GuardListConsistency.java
* (edit) hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
* (edit) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Listing.java
* (add) hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AContractGetFileStatusV1List.java


> 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
>             Fix For: 3.0.0-beta1
>
>         Attachments: HADOOP-13421.002.patch, HADOOP-13421.003.patch, HADOOP-13421.004.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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