AWS ElasticMapReduce TaskConfiguration_H2
Avoiding Cluster Slowdowns (AMI 3.0.0) Task JVM Memory Settings Hadoop 2 uses two parameters to configure memory for map and reduce: mapreduce.map.java.opts and mapreduce.reduce.java.opts, respectively. These replace the single configuration option from previous Hadoop versions: mapreduce.map.java.opts. The defaults for these settings per instance type are shown in the following tables. m1.medium Configuration Option Default Value… Read More »