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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14237) S3A Support Shared Instance Profile Credentials Across All Instances
Date Sat, 25 Mar 2017 00:44:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15941404#comment-15941404
] 

ASF GitHub Bot commented on HADOOP-14237:
-----------------------------------------

GitHub user kazuyukitanimura opened a pull request:

    https://github.com/apache/hadoop/pull/207

    HADOOP-14237. S3A Support Shared Instance Profile Credentials Across All Instances

    Hi @steveloughran 
    
    Yet another patch that I made a few months back.
    I explained the issue at https://issues.apache.org/jira/browse/HADOOP-14237
    
    This pull request is aiming for more open discussions rather than a complete solution.
It would be great if you could offer your thoughts.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/bloomreach/hadoop HADOOP-14237

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/hadoop/pull/207.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #207
    
----
commit e3cfeaeddf99aba69e64f502b3d1332dc09b10f4
Author: kazu <kazu@bloomreach.com>
Date:   2017-03-25T00:37:03Z

    HADOOP-14237. S3A Support Shared Instance Profile Credentials Across All Instances

----


> S3A Support Shared Instance Profile Credentials Across All Instances
> --------------------------------------------------------------------
>
>                 Key: HADOOP-14237
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14237
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 2.8.0, 3.0.0-alpha1, 3.0.0-alpha2, 2.8.1
>         Environment: EC2, AWS
>            Reporter: Kazuyuki Tanimura
>
> When I run a large Hadoop cluster on EC2 instances with IAM Role, it fails getting the
instance profile credentials, eventually all jobs on the cluster fail. Since a number of S3A
clients (all mappers and reducers) try to get the credentials, the AWS credential endpoint
starts responding 5xx and 4xx error codes.
> SharedInstanceProfileCredentialsProvider.java is sort of trying to solve it, but it still
does not share the credentials with other EC2 instances / processes.
> This issue prevents users from creating Hadoop clusters on EC2



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