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MapReduce >> mail # user >> Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks)


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Different ways of configuring the memory to the TaskTracker child process (Mapper and Reduce Tasks)
Hi,

What is the difference between setting the mapred.job.map.memory.mb and
mapred.child.java.opts using -Xmx to control the maximum memory used by a
Mapper and Reduce task? Which one takes precedence?

Thanks,
Praveen
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB