You are running a Hadoop cluster with MapReduce version 2 (MRv2) on YARN.

Vendor: Cloudera
Product: CCA-500
Update on: Jan 7, 2026
Questions: 60

Cloudera CCA-500 Question Answer

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 size property to 3GB to optimize performance?

yarn.application.child.java.opts=-Xsx3072m

yarn.application.child.java.opts=-Xmx3072m

mapreduce.map.java.opts=-Xms3072m

mapreduce.map.java.opts=-Xmx3072m