When running jps as root in solaris or linux, it should be able to display process information for all running java process in the system. This worked fine untill 7u72:
jps running In 7u72 solaris machine:
jps running In 7u75 solaris machine:
1739 -- process information unavailable
722 -- process information unavailable
1637 -- process information unavailable
This bug has been introduced when fix JDK-8050807 was merged in JDK repository. In this fix UID of directory is matched with the effective Id of process. When JPS command is executed as root, it tries to read the process information from "/tmp/hsperfdata_$username_$ProcessID" file. Before reading the process file or directory, it checks if the file or directory is secure or not. It opens the user directory and match the UID of that directory (which belong to other user) with the current process(root-jps) effective ID,which gets fail and process returns failure.