[jira] [Updated] (HADOOP-13319) S3A to list InstanceProfileCredentialsProvider after EnvironmentVariableCredentialsProvider

["Steve Loughran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-13319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran updated HADOOP-13319:
------------------------------------
    Attachment: HADOOP-13252-branch-2-001.patch

Patch 001. Flips the order of creation.

full test run against s3 ireland

> S3A to list InstanceProfileCredentialsProvider after EnvironmentVariableCredentialsProvider
> -------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-13319
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13319
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: HADOOP-13252-branch-2-001.patch
>
>
> S3A now has a default list of credential providers to pick up AWS credentials from
> The environment variable provider added in HADOOP-12807 should go before the {{InstanceProfileCredentialsProvider}} one in the list, as it does a simple env var checkup. In contrast  {{InstanceProfileCredentialsProvider}} does an HTTP request *even when not running on EC2*. It may block for up to 2s to await a timeout, and network problems could take longer.
> Checking env vars is a low cost operation that shouldn't have to wait for a network timeout before being picked up.



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