Verifying installation

After HDP with IBM Spectrum® Scale service is deployed, verify the installation setup.

1. Verify all uid/gid values for user to ensure that they are consistent across all IBM Spectrum Scale nodes. Check by using mmdsh -N all id<user-name> to see whether the UID is consistent across all nodes.
2. Check the IBM Spectrum Scale installed packages on all nodes by using rpm -qa | grep gpfs to verify that all base IBM Spectrum Scale packages have been installed.
3. As user, ambari-qa, check the user id and access to the file system.

   HDFS commands:
   $hadoop fs -ls /user
   
   POSIX commands:
   $pwd; ls -ltr
   
   #Create a file with entry
   $ echo "My test" > mytest
   $ cat mytest
   
   HDFS commands:
   $ hadoop fs -cat mytest
   
   POSIX commands:
   $ rm mytest
   $ls -ltr

4. Run wordcount as user.
   1. Create a mywordcountfile.
   2. Use the mywordcountfile file to be used as input to the wordcount program.

      $ yarn jar
      /usr/hdp/3.0.0.0-1634/hadoop-mapreduce/ hadoop-mapreduce-examples-3.1.0.3.0.0.0-1634.jar
      wordcount mywordcountfile wc_output

   3. Check the output in directory

      $ hadoop fs -ls wc_output

5. Run teragen/terasort. See Hortonworks Smoke Test Mapreduce.