Configure the G1GC garbage collector (Technical Preview)
The Oracle JDK 7 update 4 introduced the Garbage First Garbage Collector (G1GC). You must follow certain recommendations when switching from the currently used Concurrent Mark Sweep (CMS) GC to G1GC.
This feature is a technical preview and considered under development. Do not use this feature in your production systems. If you have questions regarding this feature, contact Support by logging a case on our Hortonworks Support Portal at https://support.hortonworks.com.