Additional options and overrides for mapred-site.xml https://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml.
Declarations
Type
attribute set of anythingDefault
{ }Example
{
"mapreduce.map.java.opts" = "-Xmx900m -XX:+UseParallelGC";
}