Architecture and Hadoop2 the similarities and differences Hadoop1

  • HDFS's NameNode be deployed in a cluster, enhanced NameNodes level of scalability and high availability, namely: HDFSFederation and HA

  • MapReduce task and resource management in the life cycle management JobTracker, split into two separate components, and changed its name to YARN (Yet Another Resource Negotiator)

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Origin www.cnblogs.com/xiangyuguan/p/11362631.html