[ 
https://issues.apache.org/jira/browse/HADOOP-19026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803518#comment-17803518
 ] 

Steve Loughran commented on HADOOP-19026:
-----------------------------------------


{code}
java.lang.AssertionError: Cause not a IOException
        at 
org.apache.hadoop.fs.s3a.auth.TestIAMInstanceCredentialsProvider.__CLR4_4_1ey8o37g7b(TestIAMInstanceCredentialsProvider.java:100)
        at 
org.apache.hadoop.fs.s3a.auth.TestIAMInstanceCredentialsProvider.testIAMInstanceCredentialsInstantiate(TestIAMInstanceCredentialsProvider.java:72)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
        at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.lang.Thread.run(Thread.java:750)
Caused by: software.amazon.awssdk.core.exception.SdkClientException: Failed to 
load credentials from IMDS.
        at 
software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:111)
        at 
software.amazon.awssdk.core.exception.SdkClientException.create(SdkClientException.java:47)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.refreshCredentials(InstanceProfileCredentialsProvider.java:159)
        at 
software.amazon.awssdk.utils.cache.CachedSupplier.lambda$jitteredPrefetchValueSupplier$8(CachedSupplier.java:300)
        at 
software.amazon.awssdk.utils.cache.NonBlocking.fetch(NonBlocking.java:141)
        at 
software.amazon.awssdk.utils.cache.CachedSupplier.refreshCache(CachedSupplier.java:208)
        at 
software.amazon.awssdk.utils.cache.CachedSupplier.get(CachedSupplier.java:135)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.resolveCredentials(InstanceProfileCredentialsProvider.java:141)
        at 
org.apache.hadoop.fs.s3a.auth.IAMInstanceCredentialsProvider.getCredentials(IAMInstanceCredentialsProvider.java:135)
        at 
org.apache.hadoop.fs.s3a.auth.IAMInstanceCredentialsProvider.resolveCredentials(IAMInstanceCredentialsProvider.java:98)
        at 
org.apache.hadoop.fs.s3a.auth.TestIAMInstanceCredentialsProvider.__CLR4_4_1ey8o37g7b(TestIAMInstanceCredentialsProvider.java:75)
        ... 14 more
Caused by: software.amazon.awssdk.core.exception.SdkClientException: The 
requested metadata is not found
at http://169.254.169.254/latest/meta-data/iam/security-credentials/
        at 
software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:111)
        at 
software.amazon.awssdk.regions.util.HttpResourcesUtils.readResource(HttpResourcesUtils.java:125)
        at 
software.amazon.awssdk.regions.util.HttpResourcesUtils.readResource(HttpResourcesUtils.java:91)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.lambda$getSecurityCredentials$3(InstanceProfileCredentialsProvider.java:256)
        at 
software.amazon.awssdk.utils.FunctionalUtils.lambda$safeSupplier$4(FunctionalUtils.java:108)
        at 
software.amazon.awssdk.utils.FunctionalUtils.invokeSafely(FunctionalUtils.java:136)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.getSecurityCredentials(InstanceProfileCredentialsProvider.java:256)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.createEndpointProvider(InstanceProfileCredentialsProvider.java:204)
        at 
software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.refreshCredentials(InstanceProfileCredentialsProvider.java:150)
        ... 22 more

{code}


> S3A: TestIAMInstanceCredentialsProvider.testIAMInstanceCredentialsInstantiate 
> failure
> -------------------------------------------------------------------------------------
>
>                 Key: HADOOP-19026
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19026
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3, test
>    Affects Versions: 3.4.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> test failure in TestIAMInstanceCredentialsProvider; looks like the test is 
> running in an EC2 VM whose IAM service isn't providing credentials -and the 
> test isn't set up to ignore that.
> {code}
> Caused by: software.amazon.awssdk.core.exception.SdkClientException: The 
> requested metadata is not found
> at http://169.254.169.254/latest/meta-data/iam/security-credentials/
>       at 
> software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:111)
>       at 
> software.amazon.awssdk.regions.util.HttpResourcesUtils.readResource(HttpResourcesUtils.java:125)
>       at 
> software.amazon.awssdk.regions.util.HttpResourcesUtils.readResource(HttpResourcesUtils.java:91)
>       at 
> software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.lambda$getSecurityCredentials$3(InstanceProfileCredentialsProvider.java:256)
>       at 
> software.amazon.awssdk.utils.FunctionalUtils.lambda$safeSupplier$4(FunctionalUtils.java:108)
>       at 
> software.amazon.awssdk.utils.FunctionalUtils.invokeSafely(FunctionalUtils.java:136)
>       at 
> software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.getSecurityCredentials(InstanceProfileCredentialsProvider.java:256)
>       at 
> software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.createEndpointProvider(InstanceProfileCredentialsProvider.java:204)
>       at 
> software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider.refreshCredentials(InstanceProfileCredentialsProvider.java:150)
> {code}



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