Release 0.10 (2019-10-18)

MR3

• TaskScheduler supports a new scheduling policy (specified by mr3.taskattempt.queue.scheme) which significantly improves the throughput for concurrent queries.
• DAGAppMaster recovers from OutOfMemoryErrors due to the exhaustion of threads.

Hive on MR3

• Compaction sends DAGs to MR3, instead of MapReduce, when hive.mr3.compaction.using.mr3 is set to true.
• LlapDecider asks MR3 DAGAppMaster for the number of Reducers.
• ConvertJoinMapJoin asks MR3 DAGAppMaster for the current number of Nodes to estimate the cost of Bucket Map Join.
• Support Hive 3.1.2 and 2.3.6.
• Support Helm charts.
• Compaction works okay on Kubernetes.