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Hadoop >> mail # user >> MapReduce tunning


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MapReduce tunning
I am looking at some hadoop tuning parameters like io.sort.mb,
mapred.child.javaopts etc.

- My question was where to look at for current setting
- Are these settings configured cluster wide or per job?
- What's the best way to look at reasons of slow performance?
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