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HIVE LLAP: managing concurrent queries


When running a large Hive query that takes up the whole cluster (all LLAP executors are busy), simultaneously trying to run even a simplest query takes a lot of time, probably because the process is waiting for a free executor to work with.

Is it possible to restrict/manage the queues in a similar manner as does YARN, i.e., so that there would always be at least one free executor for a quick query, or that the tasks from concurrent queries would be pushed in front of the line to guarantee some minimal amount of exposure to the executors these tasks would get?


premeption of a query in not enabled till 2.6.4.

Kindly use 2.6.5 or higher version for utilizing the prempetion feature of LLAP