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https://issues.apache.org/jira/browse/HDFS-14907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16951584#comment-16951584
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Takanobu Asanuma commented on HDFS-14907:
-----------------------------------------
[~aajisaka] Thanks for your comments, I tried it but it didn't solve the
problem. It is no effect on datanode which is started by
start-dynamometer-cluster.sh.
The wrong jar name is issued by HDFS-14638.
> [Dynamometer] DataNode can't find junit jar when using Hadoop-3 binary
> ----------------------------------------------------------------------
>
> Key: HDFS-14907
> URL: https://issues.apache.org/jira/browse/HDFS-14907
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Takanobu Asanuma
> Priority: Major
>
> When executing {{start-dynamometer-cluster.sh}} with Hadoop-3 binary,
> datanodes fail to run with the following log and
> {{start-dynamometer-cluster.sh}} fails.
> {noformat}
> LogType:stderr
> LogLastModifiedTime:Wed Oct 09 15:03:09 +0900 2019
> LogLength:1386
> LogContents:
> Exception in thread "main" java.lang.NoClassDefFoundError: org/junit/Assert
> at
> org.apache.hadoop.test.GenericTestUtils.assertExists(GenericTestUtils.java:299)
> at
> org.apache.hadoop.test.GenericTestUtils.getTestDir(GenericTestUtils.java:243)
> at
> org.apache.hadoop.test.GenericTestUtils.getTestDir(GenericTestUtils.java:252)
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.getBaseDirectory(MiniDFSCluster.java:2982)
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.determineDfsBaseDir(MiniDFSCluster.java:2972)
> at
> org.apache.hadoop.hdfs.MiniDFSCluster.formatDataNodeDirs(MiniDFSCluster.java:2834)
> at
> org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.run(SimulatedDataNodes.java:123)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at
> org.apache.hadoop.tools.dynamometer.SimulatedDataNodes.main(SimulatedDataNodes.java:88)
> Caused by: java.lang.ClassNotFoundException: org.junit.Assert
> at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ... 9 more
> ./start-component.sh: line 317: kill: (2261) - No such process
> {noformat}
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