Can't identify hadoop home from Matlab to use Matlab Parallel Toolbox.

I have Matlab2014b + Hadoop installed. The hadoop works well on my CentOS Linux system.

I run the mablab on that CentOS Linux machine. With the commands as follows.

It shows the folder is not a valid Hadop no matter how to change it ( I tried set the directory with hadoop 1.2.1, hadoop 2.5.2, hadoop cloudera distribution; also tried with parameter HADOOP_PREFIX,HADOOP_HOME,MATLAB_HADOOP_INSTALL ).

Anything else I can do to fix this error ?

>> setenv('MATLAB_HADOOP_INSTALL','/mnt/disk1/data/soft/hadoop-2.5.2');

>> cluster = parallel.cluster.Hadoop;

Error using parallel.cluster.Hadoop (line 107) Unable to recognize '/mnt/disk1/data/soft/hadoop-2.5.2' as a valid HADOOP installation folder. Check that this is the root of your HADOOP installation folder.

Thanks and Best Wishes. Xinsong

[Rick Amos]

Hi Xinsong,

What version of Java is the Hadoop installation setup to use and is it 1.7 or later?

The version of java can be determined by going to the java home folder set in 'etc/hadoop/hadoop-env.sh' and executing:

>> !bin/java -version

If 'etc/hadoop/hadoop-env.sh' has the default for JAVA_HOME, that it uses the environment variable of the same name, then a shortcut is:

>> cd(getenv('JAVA_HOME'))
>> !bin/java -version

[Esther Ling]

Hi Xinsong,

I am facing the same error as well.

Did you manage to resolve the problem?

-Esther

[Karthick S]

Dear Xinsong Li. Have you got the answer this.. can you suggest me to solve the same error

karthi

[Jan Cerveny]

Any news on this? I'm facing the same issue.

Cheers,

Jan