Scaling Namespaces and Optimizing Data Storage
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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