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https://issues.apache.org/jira/browse/HADOOP-15990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16778160#comment-16778160
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Steve Loughran commented on HADOOP-15990:
-----------------------------------------

checked this, not merging any more
{code}
Checking patch 
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java...
Hunk #1 succeeded at 34 (offset 2 lines).
Checking patch 
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java...
error: while searching for:

      initCannedAcls(conf);

      verifyBucketExists();

      serverSideEncryptionAlgorithm = getEncryptionAlgorithm(bucket, conf);
      inputPolicy = S3AInputPolicy.getPolicy(

error: patch failed: 
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:308
error: repository lacks the necessary blob to fall back on 3-way merge.
error: 
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:
 patch does not apply
Checking patch 
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/MockS3ClientFactory.java...
error: while searching for:
      final String bucket,
      final AWSCredentialsProvider credentialSet) {
    AmazonS3 s3 = mock(AmazonS3.class);
    when(s3.doesBucketExist(bucket)).thenReturn(true);
    // this listing is used in startup if purging is enabled, so
    // return a stub value

error: patch failed: 
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/MockS3ClientFactory.java:39
error: repository lacks the necessary blob to fall back on 3-way merge.
error: 
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/MockS3ClientFactory.java:
 patch does not apply
Checking patch 
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/TestS3ABucketVerifyV2.java...
{code}

> S3AFileSystem.verifyBucketExists to move to s3.doesBucketExistV2
> ----------------------------------------------------------------
>
>                 Key: HADOOP-15990
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15990
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Assignee: lqjacklee
>            Priority: Major
>         Attachments: HADOOP-15409-005.patch, HADOOP-15990-006.patch
>
>
> in S3AFileSystem.initialize(), we check for the bucket existing with 
> verifyBucketExists(), which calls s3.doesBucketExist(). But that doesn't 
> check for auth issues. 
> s3. doesBucketExistV2() does at least validate credentials, and should be 
> switched to. This will help things fail faster 
> See SPARK-24000
> (this is a dupe of HADOOP-15409; moving off git PRs so we can get yetus to 
> test everything)



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