REST fetch of groups in JBoss ON does not scale

Solution Unverified - Updated -

Issue

  • Fetching groups via REST does not scale.
  • REST interface group.json call is hanging JON server and causing transactions to roll back after 10 minutes;
  • Attempting to do a REST call to /rest/group.json the call takes a very long time, about 10 minutes, and finishes with a "transaction rolled back" result.
  • After unsuccessful /rest/group.json call in JBoss ON UI, the server continues to use full CPU with constant Full GC until restarted.

Environment

  • Red Hat JBoss Operations Network (ON) 3.3.5
  • More then 400 agents;
  • More then 50 groups;
  • Attempt to view all groups in the JBoss ON using REST:

http://jon.example.server:7080/rest/group.json

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