https://community.cloudera.com/t5/Archives-of-Support-Questions/Meaning-of-Hive-LLAP-configuration-quot-Hold-Containers-to/m-p/186143#M64935 <P>One of the Hive Interactive Query (LLAP) configs is "Hold Containers to Reduce Latency" and it is set to false by default. What specifically does this config control, and since the goal of LLAP is fast response times (down to subsecond), why is the default value not true since the config name suggests that turning it on would reduce latency?</P> Fri, 14 Jul 2017 20:55:54 GMT gkeys 2017-07-14T20:55:54Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Meaning-of-Hive-LLAP-configuration-quot-Hold-Containers-to/m-p/186143#M64935 <P>One of the Hive Interactive Query (LLAP) configs is "Hold Containers to Reduce Latency" and it is set to false by default. What specifically does this config control, and since the goal of LLAP is fast response times (down to subsecond), why is the default value not true since the config name suggests that turning it on would reduce latency?</P> Fri, 14 Jul 2017 20:55:54 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Meaning-of-Hive-LLAP-configuration-quot-Hold-Containers-to/m-p/186143#M64935 gkeys 2017-07-14T20:55:54Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Meaning-of-Hive-LLAP-configuration-quot-Hold-Containers-to/m-p/186144#M64936 <P><A rel="user" href="https://community.cloudera.com/users/11288/gkeys.html" nodeid="11288">@Greg Keys</A></P><P>"Hold Containers to Reduce Latency" refers to property "hive.prewarm.enabled" which is launch the Tez application masters at the time of Hive startup. This is set to false as LLAP maintains LLAP daemons to perform the application runs without the need of launching of Tez Application masters.</P> Wed, 26 Jul 2017 12:51:43 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Meaning-of-Hive-LLAP-configuration-quot-Hold-Containers-to/m-p/186144#M64936 ssubhas 2017-07-26T12:51:43Z