Hadoop调优
- http://www.cloudera.com/documentation/enterprise/latest/topics/admin_performance.html
- https://community.hortonworks.com/articles/550/unofficial-storm-and-kafka-best-practices-guide.html
- https://community.hortonworks.com/articles/49789/kafka-best-practices.html
- https://community.hortonworks.com/articles/49949/test-7.html