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https://issues.apache.org/jira/browse/HADOOP-10457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13957491#comment-13957491
]
Steve Loughran commented on HADOOP-10457:
-----------------------------------------
{code}
testSeekPastEndOfFileThenReseekAndRead(org.apache.hadoop.fs.contract.s3n.TestNativeS3SeekContract)
Time elapsed: 4.499 sec <<< ERROR!
java.lang.NullPointerException: null
at
org.apache.hadoop.fs.s3native.NativeS3FileSystem$NativeS3FsInputStream.read(NativeS3FileSystem.java:131)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at
org.apache.hadoop.fs.contract.AbstractSeekContractTest.testSeekPastEndOfFileThenReseekAndRead(AbstractSeekContractTest.java:219)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
{code}
> S3N NPEs if you do a read() after a seek()
> ------------------------------------------
>
> Key: HADOOP-10457
> URL: https://issues.apache.org/jira/browse/HADOOP-10457
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Steve Loughran
> Priority: Minor
>
> if you do a seek past the EOF of an S3n file
> # it doesn't throw any exception
> # on the next read, you get to see a stack trace
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