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Posted to common-issues@hadoop.apache.org by "lqjacklee (JIRA)" <ji...@apache.org> on 2018/11/20 14:56:00 UTC
[jira] [Commented] (HADOOP-15650) Add custom
InstanceProfileCredentialsProvider with more resilience to throttling
[ https://issues.apache.org/jira/browse/HADOOP-15650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16693332#comment-16693332 ]
lqjacklee commented on HADOOP-15650:
------------------------------------
[~stevel@apache.org] 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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