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MapReduce >> mail # user >> do comparators need to be thread safe?


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do comparators need to be thread safe?
Do comparators set via JobConf.setOutputKeyComparator or
JobConf.setOutputValueGroupingComparator and not through
WritableComparator.define need to be thread safe?
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