./mapred groups gives NoClassDefFoundError
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/mapred/tools/GetGroups
1 job client
1. Run mapreduce job request commandline (feature start)
When running command line “./mapred groups” it throws NoClassDefFoundError exception.
The group feature has been eliminated so running the command line will not works.
In the startup script it forgot to handle this exception.
Script is inconsistent after the group feature is removed
Incorrect exception handling
Add groups to the the error handling part of the script