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Table of Contents

Low Latency Analytical Processing Live Long And Process (LLAP) functionality was added in Hive 2.0 (HIVE-7926 and associated tasks). HIVE-9850 links documentation, features, and issues for this enhancement.

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LLAP can be deployed via Slider, which bypasses node installation and related complexities (HIVE-9883).

LLAP Status Status

AMBARI-16149 introduces LLAP app status, available with Hive ServerHiveServer2.

Example usage.

/current/hive-server2-hive2/bin/hive --service llapstatus --name {llap_app_name} [-f] [-w] [-i] [-t]
Code Block
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 -f,--findAppTimeout <findAppTimeout>                 Amount of time(s) that the tool will sleep to wait for the YARN application to start. negative values=wait
                                                      forever, 0=Do not wait. default=20s
 -H,--help                                            Print help information
    --hiveconf <property=value>                       Use value for given property. Overridden by explicit parameters
 -i,--refreshInterval <refreshInterval>               Amount of time in seconds to wait until subsequent status checks in watch mode. Valid only for watch mode.
                                                      (Default 1s)
 -n,--name <name>                                     LLAP cluster name
 -o,--outputFile <outputFile>                         File to which output should be written (Default stdout)
 -r,--runningNodesThreshold <runningNodesThreshold>   When watch mode is enabled (-w), wait until the specified threshold of nodes are running (Default 1.0
                                                      which means 100% nodes are running)
 -t,--watchTimeout <watchTimeout>                     Exit watch mode if the desired state is not attained until the specified timeout. (Default 300s)
 -w,--watch                                           Watch mode waits until all LLAP daemons are running or subset of the nodes are running (threshold can be
                                                      specified via -r option) (Default wait until all nodes are running)
Info
titleVersion information

The findAppTimeout option was added in release 2.1.0 with HIVE-13643: -f or --findAppTimeout.

The watch and running nodes options were added in release 2.2.0 with HIVE-15217 and HIVE-15651: -w or --watch, -i or --refreshInterval, -t or --watchTimeout, and -r or --runningNodesThreshold.

 

Resources

LLAP Design Document

Hive Contributor Meetup PresentationTry Hive LLAP

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