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From "Anastasis Andronidis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7203) Folder Paths
Date Mon, 21 Mar 2011 20:03:05 GMT
Folder Paths
------------

                 Key: HADOOP-7203
                 URL: https://issues.apache.org/jira/browse/HADOOP-7203
             Project: Hadoop Common
          Issue Type: Bug
          Components: build
    Affects Versions: 0.21.0
         Environment: Mac OS X (but the same effect in linux)

$java -version
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07-334-10M3326)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02-334, mixed mode)
            Reporter: Anastasis Andronidis
            Priority: Minor


I tried to execute: ./bin/hadoop namenode -format in hadoop-0.21.0 inside a folder with path:
~/Desktop/my test/hadoop-0.21.0/
But i kept receiving the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: test/hadoop-0/21/0/bin////logs
Caused by: java.lang.ClassNotFoundException: me.hadoop-0.21.0.bin....logs
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

Tried to change the language just to test what would happen. So I got a same error with a
folder name with spaces:

Exception in thread "main" java.lang.NoClassDefFoundError: ??????
Caused by: java.lang.ClassNotFoundException: ??????
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

(You can notice the ???, might this be a java issue?)

I was able to run it only in folder names that didn't include spaces. Both english and greek.

I tried to trace this issue and I found that the problem is in the HADOOP_HOME/hdfs script.
On the last line where: exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS $CLASS "$@" tries to be executed,
variable HADOOP_OPTS has white spaces which produce the above errors. 

A solution to this problem could be to include double quotes to each path when they are collected
and call exec command with eval at the front.

I found a workaround to this issue by adding:

tmp=`echo ${HADOOP_OPTS// /\\\ }`
eval exec "$JAVA" $JAVA_HEAP_MAX $(echo ${tmp//\\ \-/\ \-}) " " $CLASS "$@"

This code basically it added backslashes in front of each space in a path.


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