How to enable LLAP in Hive 3?

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I installed Hive 3.1.0 on top Hadoop 3.1.1(without using Ambari). How can I enable LLAP feature in Hive.

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1
tk421 On

Configuring LLAP is covered in Hive Configuration Properties: LLAP section. To enable it you need to change hive.llap.execution.mode.

The document describes how to set hive.llap.execution.mode:

  • Default Value: none
  • Possible Values:
    • none: not tried
    • map: only map operators are considered for llap
    • all: every operator is tried; but falls back to no-llap in case of problems
    • only: same as "all" but stops with an exception if execution is not possible (as of 2.2.0 with HIVE-15135)
    • auto: conversion is controlled by hive

For more information about LLAP refer to https://cwiki.apache.org/confluence/display/Hive/LLAP.

0
Ali AzG On

This is a documentation for setting up LLAP (Apache Hive Performance Tuning ) in hortonworks:

https://docs.hortonworks.com/HDPDocuments/HDP3/HDP-3.1.0/performance-tuning/content/hive_setting_up_llap.html