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Release 0.4 (2018-10-29)

MR3​

  • Support auto parallelism for reducers with ONE_TO_ONE edges.
  • Auto parallelism can use input statistics when reassigning partitions to reducers.
  • Support ByteBuffer sharing among RuntimeTasks.

Hive on MR3​

  • Support Hive 3.1.0.
  • Hive 1 uses Tez 0.9.1.
  • Metastore checks the inclusion of __HIVE_DEFAULT_PARTITION__ when retrieving column statistics.
  • MR3JobMonitor returns immediately from MR3 DAGAppMaster when the DAG completes.