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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]
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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) |
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The findAppTimeout option was added in release 2.1.0 with HIVE-13643: The watch and running nodes options were added in release 2.2.0 with HIVE-15217 and HIVE-15651: |
Resources
Hive Contributor Meetup PresentationTry Hive LLAP
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