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https://issues.apache.org/jira/browse/HADOOP-15583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551488#comment-16551488
 ] 

Steve Loughran commented on HADOOP-15583:
-----------------------------------------

If you have S3Guard enabled but you don't have s3:getBucketLocation, the first 
S3 interaction to call will be the getBucketLocation operation used to find the 
region for the S3Guard table; this error message can be improved
{code}
[ERROR] 
testAssumeRoleRestrictedPolicyFS(org.apache.hadoop.fs.s3a.auth.ITestAssumeRole) 
 Time elapsed: 6.396 s  <<< ERROR!
java.nio.file.AccessDeniedException: hwdev-steve-ireland-new: 
getBucketLocation() on hwdev-steve-ireland-new: 
com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: 
Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: 
A8B11AD20AE20391; S3 Extended Request ID: 
+SSWoeRU5/mwTCs7WnWScs52x8aSJbVfhQ/lVM3fXb5G/0EU0T4BdRRMgPJImufrd/jDDl8/uWk=), 
S3 Extended Request ID: 
+SSWoeRU5/mwTCs7WnWScs52x8aSJbVfhQ/lVM3fXb5G/0EU0T4BdRRMgPJImufrd/jDDl8/uWk=:AccessDenied
        at 
org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:229)
        at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:111)
        at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:260)
        at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:317)
        at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:256)
        at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:231)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.getBucketLocation(S3AFileSystem.java:528)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.getBucketLocation(S3AFileSystem.java:516)
        at 
org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore.initialize(DynamoDBMetadataStore.java:294)
        at 
org.apache.hadoop.fs.s3a.s3guard.S3Guard.getMetadataStore(S3Guard.java:99)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:339)
        at 
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3354)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:474)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
        at 
org.apache.hadoop.fs.s3a.auth.ITestAssumeRole.testAssumeRoleRestrictedPolicyFS(ITestAssumeRole.java:311)
        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:47)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
        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.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
        at 
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied 
(Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: 
A8B11AD20AE20391; S3 Extended Request ID: 
+SSWoeRU5/mwTCs7WnWScs52x8aSJbVfhQ/lVM3fXb5G/0EU0T4BdRRMgPJImufrd/jDDl8/uWk=), 
S3 Extended Request ID: 
+SSWoeRU5/mwTCs7WnWScs52x8aSJbVfhQ/lVM3fXb5G/0EU0T4BdRRMgPJImufrd/jDDl8/uWk=
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1639)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1304)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1056)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:743)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:717)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649)
        at 
com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513)
        at 
com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4325)
        at 
com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4272)
        at 
com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4266)
        at 
com.amazonaws.services.s3.AmazonS3Client.getBucketLocation(AmazonS3Client.java:949)
        at 
com.amazonaws.services.s3.AmazonS3Client.getBucketLocation(AmazonS3Client.java:955)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$getBucketLocation$3(S3AFileSystem.java:529)
        at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109)
        ... 25 more
{code}


> Stabilize S3A Assumed Role support
> ----------------------------------
>
>                 Key: HADOOP-15583
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15583
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.1.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Blocker
>         Attachments: HADOOP-15583-001.patch, HADOOP-15583-002.patch
>
>
> started off just on sharing credentials across S3A and S3Guard, but in the 
> process it has grown to becoming one of stabilising the assumed role support 
> so it can be used for more than just testing.
> Was: "S3Guard to get AWS Credential chain from S3AFS; credentials closed() on 
> shutdown"
> h3. Issue: lack of auth chain sharing causes ddb and s3 to get out of sync
> S3Guard builds its DDB auth chain itself, which stops it having to worry 
> about being created standalone vs part of an S3AFS, but it means its 
> authenticators are in a separate chain.
> When you are using short-lived assumed roles or other session credentials 
> updated in the S3A FS authentication chain, you need that same set of 
> credentials picked up by DDB. Otherwise, at best you are doubling load, at 
> worse: the DDB connector may not get refreshed credentials.
> Proposed: {{DynamoDBClientFactory.createDynamoDBClient()}} to take an 
> optional ref to aws credentials. If set: don't create a new set. 
> There's one little complication here: our {{AWSCredentialProviderList}} list 
> is autocloseable; it's close() will go through all children and close them. 
> Apparently the AWS S3 client (And hopefully the DDB client) will close this 
> when they are closed themselves. If DDB  has the same set of credentials as 
> the FS, then there could be trouble if they are closed in one place when the 
> other still wants to use them.
> Solution; have a use count the uses of the credentials list, starting at one: 
> every close() call decrements, and when this hits zero the cleanup is kicked 
> off
> h3. Issue: {{AssumedRoleCredentialProvider}} connector to STS not picking up 
> the s3a connection settings, including proxy.
> h3. issue: we're not using getPassword() to get user/password for proxy 
> binding for STS. Fix: use that and pass down the bucket ref for per-bucket 
> secrets in a JCEKS file.
> h3. Issue; hard to debug what's going wrong :)



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