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https://issues.apache.org/jira/browse/HADOOP-19535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Syed Shameerur Rahman updated HADOOP-19535:
-------------------------------------------
    Summary: S3A : Add WebIdentityTokenFileCredentialsProvider to default S3 
credential provider chain  (was: S3A : Add 
WebIdentityTokenFileCredentialsProvider & ContainerCredentialsProvider to 
default S3 credential provider chain)

> S3A : Add WebIdentityTokenFileCredentialsProvider to default S3 credential 
> provider chain
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-19535
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19535
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs/s3
>            Reporter: Syed Shameerur Rahman
>            Assignee: Syed Shameerur Rahman
>            Priority: Major
>
> The current default s3 credential provider chain is set in the order of 
> {code:java}
> org.apache.hadoop.fs.s3a.TemporaryAWSCredentialsProvider,org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider,software.amazon.awssdk.auth.credentials.EnvironmentVariableCredentialsProvider,org.apache.hadoop.fs.s3a.auth.IAMInstanceCredentialsProvider{code}
> Refer [code ref 
> |https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml#L1450]for
>  more details.
>  
> This works perfectly fine when used in AWS EC2, EMR Serverless, but not with 
> AWS EKS pods.
>  
> For EKS pods, It is recommended to use
> {code:java}
> software.amazon.awssdk.auth.credentials.WebIdentityTokenFileCredentialsProvider
>  , software.amazon.awssdk.auth.credentials.ContainerCredentialsProvider{code}
> WebIdentityTokenFileCredentialsProvider is an AWS credentials provider that 
> enables applications to obtain temporary AWS credentials by assuming an IAM 
> role using a web identity token (like OAuth or OIDC tokens). It's 
> particularly important in EKS as it's the underlying mechanism that makes 
> IRSA (IAM Roles for Service Accounts) work.



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