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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11882) Client fails if acknowledged size is greater than bytes sent
Date Tue, 08 Aug 2017 23:52:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119199#comment-16119199
] 

Wei-Chiu Chuang commented on HDFS-11882:
----------------------------------------

IMO this is an EC must do item rather than a nice-to-have one.
The 02 patch looks good to me. The test in the patch could be simplified by removing the catch
block, and let the exception be thrown. But i understand it is to keep consistency within
other tests in the same class.

> Client fails if acknowledged size is greater than bytes sent
> ------------------------------------------------------------
>
>                 Key: HDFS-11882
>                 URL: https://issues.apache.org/jira/browse/HDFS-11882
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: erasure-coding, test
>            Reporter: Akira Ajisaka
>            Assignee: Akira Ajisaka
>            Priority: Critical
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-11882.01.patch, HDFS-11882.02.patch, HDFS-11882.regressiontest.patch
>
>
> Some tests of erasure coding fails by the following exception. The following test was
removed by HDFS-11823, however, this type of error can happen in real cluster.
> {noformat}
> Running org.apache.hadoop.hdfs.TestDFSRSDefault10x4StripedOutputStreamWithFailure
> Tests run: 14, Failures: 0, Errors: 1, Skipped: 10, Time elapsed: 89.086 sec <<<
FAILURE! - in org.apache.hadoop.hdfs.TestDFSRSDefault10x4StripedOutputStreamWithFailure
> testMultipleDatanodeFailure56(org.apache.hadoop.hdfs.TestDFSRSDefault10x4StripedOutputStreamWithFailure)
 Time elapsed: 38.831 sec  <<< ERROR!
> java.lang.IllegalStateException: null
> 	at com.google.common.base.Preconditions.checkState(Preconditions.java:129)
> 	at org.apache.hadoop.hdfs.DFSStripedOutputStream.updatePipeline(DFSStripedOutputStream.java:780)
> 	at org.apache.hadoop.hdfs.DFSStripedOutputStream.checkStreamerFailures(DFSStripedOutputStream.java:664)
> 	at org.apache.hadoop.hdfs.DFSStripedOutputStream.closeImpl(DFSStripedOutputStream.java:1034)
> 	at org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:842)
> 	at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72)
> 	at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:101)
> 	at org.apache.hadoop.hdfs.TestDFSStripedOutputStreamWithFailure.runTest(TestDFSStripedOutputStreamWithFailure.java:472)
> 	at org.apache.hadoop.hdfs.TestDFSStripedOutputStreamWithFailure.runTestWithMultipleFailure(TestDFSStripedOutputStreamWithFailure.java:381)
> 	at org.apache.hadoop.hdfs.TestDFSStripedOutputStreamWithFailure.testMultipleDatanodeFailure56(TestDFSStripedOutputStreamWithFailure.java:245)
> 	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$1.runReflectiveCall(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}



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