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https://issues.apache.org/jira/browse/HADOOP-15650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16693332#comment-16693332
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lqjacklee commented on HADOOP-15650:
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[[email protected]] There are two ways to implement the function :
1, Invoke method by reflection, and use the dynamic proxy add monitor and log
feature.
2, Rewrite the logic, and not use the AWS code.
which one do you prefer?
> Add custom InstanceProfileCredentialsProvider with more resilience to
> throttling
> --------------------------------------------------------------------------------
>
> Key: HADOOP-15650
> URL: https://issues.apache.org/jira/browse/HADOOP-15650
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.1.0
> Reporter: Steve Loughran
> Priority: Minor
>
> Add our own InstanceProfileCredentialsProvider class which uses the AWS
> implementation to retrieve credentials from EC2's instance info, but more
> resilient to overloading.
> # pass in client config with retry logic (HADOOP-15603)
> # use Invoke.retry() to retry
> # log/measure failures
> # maybe use the Async feature of the AWS SDK class, so that credential
> renewer doesn't block IO.
> # be shared amongst all AWS auth chains which need these credentials.
> The singleton we current use for IAM auth doesn't do async, which is good as
> it ensures that we don't prematurely close it when
> {{AWSCredentialProviderList.close()}} closes its children.
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