Re: cephfs replace hdfs problem

"Fulin Sun" <sunfl@xxxxxxxxxxxxxxxx> · Mon, 12 Oct 2015 10:03:56 +0800

sign...
I had to say that I have not received any reponse from this mailing list...

From: Fulin Sun
Date: 2015-10-10 17:27
To: ceph-users
Subject:  cephfs replace hdfs problem

Hi there,

I configured hadoop-cephfs plugin and try to use cephfs as a replacement. I had sucessfully configured 

hadoop-env.sh with setting the HADOOP_CLASSPATH for hadoop-cephfs.jar

But when I run hadoop fs -ls /, I got the following exception. Looks like it cannot find the actual jar for both 
hadoop-cephfs.jar  and  libcephfs-java.jar I placed these two in the /usr/local/hadoop/lib directory and edited 
the hadoop classpath in hadoop-env.sh 

How could this issue be ? 

Thanks anyone for kind response.

java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.ceph.CephFileSystem not found
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195)
	at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2638)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2651)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:92)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2687)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2669)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:170)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:355)
	at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
	at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:325)
	at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:235)
	at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:218)
	at org.apache.hadoop.fs.shell.Command.processRawArguments(Command.java:201)
	at org.apache.hadoop.fs.shell.Command.run(Command.java:165)
	at org.apache.hadoop.fs.FsShell.run(FsShell.java:287)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
	at org.apache.hadoop.fs.FsShell.main(FsShell.java:340)
Caused by: java.lang.ClassNotFoundException: Class org.apache.hadoop.fs.ceph.CephFileSystem not found
	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101)
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
	... 18 more

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