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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15079) ITestS3AFileOperationCost#testFakeDirectoryDeletion failing after OutputCommitter patch
Date Fri, 01 Dec 2017 09:35:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274165#comment-16274165
] 

Steve Loughran commented on HADOOP-15079:
-----------------------------------------

Correction: no JIRA, just a comment in HADOOP-14594 about it.

> ITestS3AFileOperationCost#testFakeDirectoryDeletion failing after OutputCommitter patch
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-15079
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15079
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.1.0
>            Reporter: Sean Mackrory
>            Priority: Critical
>
> I see this test failing with "object_delete_requests expected:<1> but was:<2>".
I printed stack traces whenever this metric was incremented, and found the root cause to be
that innerMkdirs is now causing two calls to delete fake directories when it previously caused
only one. It is called once inside createFakeDirectory, and once directly inside innerMkdirs
later:
> {code}
>         at org.apache.hadoop.fs.s3a.S3AInstrumentation.incrementCounter(S3AInstrumentation.java:454)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.incrementStatistic(S3AFileSystem.java:1108)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$deleteObjects$8(S3AFileSystem.java:1369)
>         at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:313)
>         at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:279)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.deleteObjects(S3AFileSystem.java:1366)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.removeKeys(S3AFileSystem.java:1625)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.deleteUnnecessaryFakeDirectories(S3AFileSystem.java:2634)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.finishedWrite(S3AFileSystem.java:2599)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.putObjectDirect(S3AFileSystem.java:1498)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$createEmptyObject$11(S3AFileSystem.java:2684)
>         at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:108)
>         at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:259)
>         at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:313)
>         at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:255)
>         at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:230)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.createEmptyObject(S3AFileSystem.java:2682)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.createFakeDirectory(S3AFileSystem.java:2657)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.innerMkdirs(S3AFileSystem.java:2021)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:1956)
>         at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2305)
>         at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338)
>         at org.apache.hadoop.fs.s3a.ITestS3AFileOperationCost.testFakeDirectoryDeletion(ITestS3AFileOperationCost.java:209)
>         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
> {code}
> {code}
>         at org.apache.hadoop.fs.s3a.S3AInstrumentation.incrementCounter(S3AInstrumentation.java:454)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.incrementStatistic(S3AFileSystem.java:1108)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$deleteObjects$8(S3AFileSystem.java:1369)
>         at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:313)
>         at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:279)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.deleteObjects(S3AFileSystem.java:1366)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.removeKeys(S3AFileSystem.java:1625)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.deleteUnnecessaryFakeDirectories(S3AFileSystem.java:2634)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.innerMkdirs(S3AFileSystem.java:2025)
>         at org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:1956)
>         at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2305)
>         at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338)
>         at org.apache.hadoop.fs.s3a.ITestS3AFileOperationCost.testFakeDirectoryDeletion(ITestS3AFileOperationCost.java:209)
>         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)
> {code}



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