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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15651) NPE in S3AInputStream.read() in ITestS3AInconsistency.testOpenFailOnRead
Date Fri, 03 Aug 2018 22:18:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16568852#comment-16568852
] 

Steve Loughran commented on HADOOP-15651:
-----------------------------------------

Stack; test log will go in output. Endpoint: us-west-1; test run {{-Dparallel-tests -DtestsThreadCount=8
 }}. Bucket always has DDB enabled.

{code}
[ERROR] Tests run: 3, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 27.63 s <<<
FAILURE! - in org.apache.hadoop.fs.s3a.ITestS3AInconsistency
[ERROR] testOpenFailOnRead(org.apache.hadoop.fs.s3a.ITestS3AInconsistency)  Time elapsed:
17.242 s  <<< ERROR!
java.lang.NullPointerException
	at org.apache.hadoop.fs.s3a.S3AInputStream.lambda$read$2(S3AInputStream.java:368)
	at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109)
	at org.apache.hadoop.fs.s3a.Invoker.lambda$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.S3AInputStream.read(S3AInputStream.java:364)
	at java.io.FilterInputStream.read(FilterInputStream.java:83)
	at org.apache.hadoop.fs.s3a.ITestS3AInconsistency.doOpenFailOnReadTest(ITestS3AInconsistency.java:180)
	at org.apache.hadoop.fs.s3a.ITestS3AInconsistency.testOpenFailOnRead(ITestS3AInconsistency.java:162)
	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}



> NPE in S3AInputStream.read() in ITestS3AInconsistency.testOpenFailOnRead
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-15651
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15651
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3, test
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Priority: Major
>
> Test {{ITestS3AInconsistency.testOpenFailOnRead()}} raise an NPE in read(); could only
happen on that line if {{wrappedStream==null}}, which implies that previous attempts to re-open
the closed stream failed and that this didn't trigger anything.
> Not seen this before, but given that the fault injection is random, it may be that so
far test runs have been *unlucky* and missed this.



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