New Contributor
Posts: 2
Registered: ‎04-25-2017

hbase memory overhead

why cdh components needs additional 30% memory overhead??



Posts: 34
Registered: ‎03-07-2017

Re: hbase memory overhead

The heap size is reserved for data, while the extra overhead is reserved for data structures related to the service. Spark for example has a default memory overhead of 40% for spark related data structures when allocating executor memory.