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https://issues.apache.org/jira/browse/HDFS-13568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477000#comment-16477000
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Anbang Hu commented on HDFS-13568:
----------------------------------

[~elgoiri] Not sure if we can do anything about DNS resolving here. Note that 
this test also times out in [Windows daily 
build|https://builds.apache.org/job/hadoop-trunk-win/467/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeUUID/testUUIDRegeneration/].

> TestDataNodeUUID#testUUIDRegeneration times out on Windows
> ----------------------------------------------------------
>
>                 Key: HDFS-13568
>                 URL: https://issues.apache.org/jira/browse/HDFS-13568
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Anbang Hu
>            Assignee: Anbang Hu
>            Priority: Major
>              Labels: Windows
>         Attachments: HDFS-13568.000.patch
>
>
> {color:#d04437}[INFO] Running 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeUUID{color}
> {color:#d04437}[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time 
> elapsed: 10.059 s <<< FAILURE! - in 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeUUID{color}
> {color:#d04437}[ERROR] 
> testUUIDRegeneration(org.apache.hadoop.hdfs.server.datanode.TestDataNodeUUID) 
> Time elapsed: 10.006 s <<< ERROR!{color}
> {color:#d04437}java.lang.Exception: test timed out after 10000 
> milliseconds{color}
> {color:#d04437} at java.net.Inet4AddressImpl.getHostByAddr(Native 
> Method){color}
> {color:#d04437} at 
> java.net.InetAddress$2.getHostByAddr(InetAddress.java:932){color}
> {color:#d04437} at 
> java.net.InetAddress.getHostFromNameService(InetAddress.java:617){color}
> {color:#d04437} at 
> java.net.InetAddress.getCanonicalHostName(InetAddress.java:588){color}
> {color:#d04437} at 
> org.apache.hadoop.net.DNS.resolveLocalHostname(DNS.java:284){color}
> {color:#d04437} at org.apache.hadoop.net.DNS.<clinit>(DNS.java:61){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.namenode.NNStorage.newBlockPoolID(NNStorage.java:989){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.namenode.NNStorage.newNamespaceInfo(NNStorage.java:599){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:168){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1172){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:403){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.DFSTestUtil.formatNameNode(DFSTestUtil.java:234){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:1080){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:883){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:514){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:473){color}
> {color:#d04437} at 
> org.apache.hadoop.hdfs.server.datanode.TestDataNodeUUID.testUUIDRegeneration(TestDataNodeUUID.java:90){color}
> {color:#d04437} at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
> Method){color}
> {color:#d04437} at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62){color}
> {color:#d04437} at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43){color}
> {color:#d04437} at java.lang.reflect.Method.invoke(Method.java:498){color}
> {color:#d04437} at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47){color}
> {color:#d04437} at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12){color}
> {color:#d04437} at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44){color}
> {color:#d04437} at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17){color}
> {color:#d04437} at 
> org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74){color}
> {color:#d04437}[INFO]{color}
> {color:#d04437}[INFO] Results:{color}
> {color:#d04437}[INFO]{color}
> {color:#d04437}[ERROR] Errors:{color}
> {color:#d04437}[ERROR] TestDataNodeUUID.testUUIDRegeneration:90 ╗ test timed 
> out after 10000 millise...{color}
> {color:#d04437}[INFO]{color}
> {color:#d04437}[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0{color}
>  
> {color:#333333}[Windows daily 
> build|https://builds.apache.org/job/hadoop-trunk-win/467/testReport/org.apache.hadoop.hdfs.server.datanode/TestDataNodeUUID/testUUIDRegeneration/]
>  also times out on this test.{color}



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