how do you increase JVM heap property to 3GB to optimize performance?

seenagape

8 years ago

You are running a Hadoop cluster with MapReduce version 2 (MRv2) on YARN. You
consistently see that MapReduce map tasks on your cluster are running slowly because of
excessive garbage collection of JVM, how do you increase JVM heap property to 3GB to
optimize performance?

A.
Yarn.application.child.java.opts-Xax3072m

B.
Yarn.application.child.java.opts=-3072m

C.
Mapreduce.map.java.opts=-Xmx3072m

D.
Mapreduce.map.java.opts=-Xms3072m