Created question in FIWARE Q/A platform on 08-12-2015 at 15:12
Please, ANSWER this question AT https://ask.fiware.org/question/300/classnotfoundexception-in-shared-hadoop-when-trying-to-create-a-directory/

Question:
ClassNotFoundException in shared hadoop, when trying to create a directory

Description:
Hi we are trying to connect a lab node with orion context broker installed to the Cosmos Big Data store. Unfortunately we are experiencing some issues with regards to Cosmos. When trying to create a directory, as explained in the documentation, we are getting the following error message:

[developer@cosmosmaster-gi ~]$ hadoop fs -mkdir /user/developer/testdirectory
Java HotSpot(TM) 64-Bit Server VM warning: Insufficient space for shared memory file:
/tmp/hsperfdatadeveloper/28027
Try using the -Djava.io.tmpdir= option to select an alternate temp location.

Exception in thread "main" java.lang.NoClassDefFoundError: /tmp/hsperfdatadeveloper/28039
Caused by: java.lang.ClassNotFoundException: .tmp.hsperfdatadeveloper.28039
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: _/tmp/hsperfdata_developer/28039. Program will exit.

Any suggestions?