[ 
https://issues.apache.org/jira/browse/HADOOP-16420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16882342#comment-16882342
 ] 

Steve Loughran commented on HADOOP-16420:
-----------------------------------------

Stack
{code}
[ERROR] testDiffCommand(org.apache.hadoop.fs.s3a.s3guard.ITestS3GuardToolLocal) 
 Time elapsed: 0.833 s  <<< ERROR!
org.apache.hadoop.fs.s3a.AWSBadRequestException: getFileStatus on fork-0001/: 
com.amazonaws.services.s3.model.AmazonS3Exception: Bad Request (Service: Amazon 
S3; Status Code: 400; Error Code: 400 Bad Request; Request ID: 
4F1AAE9F69A106FB; S3 Extended Request ID: 
w0pdC9uJax/ex0DYWrwu7h75DG7YfwpLt/fY+sIOoJCXKg8vqmz4dy+vjTIfaXPEEam+ZOQ3z8g=), 
S3 Extended Request ID: 
w0pdC9uJax/ex0DYWrwu7h75DG7YfwpLt/fY+sIOoJCXKg8vqmz4dy+vjTIfaXPEEam+ZOQ3z8g=:400
 Bad Request: Bad Request (Service: Amazon S3; Status Code: 400; Error Code: 
400 Bad Request; Request ID: 4F1AAE9F69A106FB; S3 Extended Request ID: 
w0pdC9uJax/ex0DYWrwu7h75DG7YfwpLt/fY+sIOoJCXKg8vqmz4dy+vjTIfaXPEEam+ZOQ3z8g=)
        at 
org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:237)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.s3GetFileStatus(S3AFileSystem.java:2774)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.innerGetFileStatus(S3AFileSystem.java:2707)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.getFileStatus(S3AFileSystem.java:2601)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.innerMkdirs(S3AFileSystem.java:2570)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:2532)
        at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2300)
        at 
org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338)
        at 
org.apache.hadoop.fs.contract.AbstractFSContractTestBase.setup(AbstractFSContractTestBase.java:193)
        at 
org.apache.hadoop.fs.s3a.AbstractS3ATestBase.setup(AbstractS3ATestBase.java:55)
        at 
org.apache.hadoop.fs.s3a.s3guard.AbstractS3GuardToolTestBase.setup(AbstractS3GuardToolTestBase.java:168)
        at 
org.apache.hadoop.fs.s3a.s3guard.ITestS3GuardToolLocal.setup(ITestS3GuardToolLocal.java:63)
        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
        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:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
        at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
        at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
        at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.lang.Thread.run(Thread.java:748)
Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: Bad Request 
(Service: Amazon S3; Status Code: 400; Error Code: 400 Bad Request; Request ID: 
4F1AAE9F69A106FB; S3 Extended Request ID: 
w0pdC9uJax/ex0DYWrwu7h75DG7YfwpLt/fY+sIOoJCXKg8vqmz4dy+vjTIfaXPEEam+ZOQ3z8g=), 
S3 Extended Request ID: 
w0pdC9uJax/ex0DYWrwu7h75DG7YfwpLt/fY+sIOoJCXKg8vqmz4dy+vjTIfaXPEEam+ZOQ3z8g=
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1712)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1367)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1113)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686)
        at 
com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668)
        at 
com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:532)
        at 
com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:512)
        at 
com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4920)
        at 
com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4866)
        at 
com.amazonaws.services.s3.AmazonS3Client.getObjectMetadata(AmazonS3Client.java:1320)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$getObjectMetadata$5(S3AFileSystem.java:1623)
        at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:406)
        at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:369)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.getObjectMetadata(S3AFileSystem.java:1617)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.getObjectMetadata(S3AFileSystem.java:1593)
        at 
org.apache.hadoop.fs.s3a.S3AFileSystem.s3GetFileStatus(S3AFileSystem.java:2755)
        ... 23 more
{code}

> S3A returns 400 "bad request" on a single path within an S3 bucket
> ------------------------------------------------------------------
>
>                 Key: HADOOP-16420
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16420
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.3.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> Filing this as "who knows?"; surfaced during testing. Notable that the 
> previous testing was playing with SSE-C, if that makes a difference: it could 
> be that there's a marker entry encrypted with SSE-C that is now being 
> rejected by a different run.
> Somehow, with a set of credentials I can work with all paths in a directory, 
> except read the dir marker /fork-0001/"; try that and a 400 bad request comes 
> back. AWS console views the path as an empty dir.



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