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https://issues.apache.org/jira/browse/HDFS-12916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16291834#comment-16291834
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Allen Wittenauer commented on HDFS-12916:
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bq. Ya admin commands will break with this, but hadoop tools commands should
work as I have copied tools/lib folder and changed hadoop-layout.sh accordingly
In hadoop 3.x when HADOOP_OPTIONAL_TOOLS are loaded, they expect their
dependencies from the other directories to already be in the classpath. I'd be
greatly surprised if they find them from the shaded jar since I'm pretty sure
we do class hiding.
bq. For backward compatibility we can have existing hdfs script as it is, and
we can have 2 scripts
-1 on having multiple entry points. This is one the key reasons why the shell
code in branch-2 was a disaster area. I absolutely refuse to let the shell code
regress again.
But no matter what you do, everyone is already trained to use 'hadoop
classpath'. Until that gets changed, anything else that is done is moot.
> HDFS commands throws error, when only shaded clients in classpath
> -----------------------------------------------------------------
>
> Key: HDFS-12916
> URL: https://issues.apache.org/jira/browse/HDFS-12916
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
>
> [root@n001 hadoop]# bin/hdfs dfs -rm /
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/htrace/core/Tracer$Builder
> at org.apache.hadoop.fs.FsShell.run(FsShell.java:303)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
> at org.apache.hadoop.fs.FsShell.main(FsShell.java:389)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.htrace.core.Tracer$Builder
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ... 4 more
> cc [~busbey]
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