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Release 1.11 (2024-7-21)

MR3​

  • Introduce mr3.dag.timeout.kill.threshold.secs and mr3.dag.timeout.kill.check.ms for checking DAG timeout.
  • mr3.daemon.task.message.buffer.size specifies the message queue size for DaemonTasks.

Hive on MR3​

  • The cache hit ratio of LLAP I/O is usually higher and more stable because LLAP I/O (with LlapInputFormat) is used only when a Task is placed on nodes matching its location hints.
  • LimitOperator is correctly controlled by MR3 DAGAppMaster (which implements HIVE-24207).
  • Support Hive 4.0.0. With the release of Apache Hive 4, we have extended MR3 to support Hive 4 as well as Hive 3.