1.

What Are The Core Changes In Hadoop 2.x?

Answer»

Many changes, especially single point of failure and Decentralize Job Tracker power to data-NODES is the main changes. Entire job tracker architecture CHANGED.

Some of the main DIFFERENCE between Hadoop 1.x and 2.x given below:

  • Single point of failure – RECTIFIED.
  • Nodes limitation (4000- to unlimited) – Rectified.
  • Job Tracker bottleneck – Rectified.
  • Map-reduce slots are changed static to dynamic.
  • High availability – Available.
  • Support both Interactive, graph ITERATIVE algorithms (1.x not support).
  • Allows other applications also to integrate with HDFS.

Many changes, especially single point of failure and Decentralize Job Tracker power to data-nodes is the main changes. Entire job tracker architecture changed.

Some of the main difference between Hadoop 1.x and 2.x given below:


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