https://community.cloudera.com/t5/Archives-of-Support-Questions/Spark-and-llap-jobs-process/m-p/214461#M74577 <P><A rel="user" href="https://community.cloudera.com/users/3134/sanchinakishore.html" nodeid="3134">@kishore sanchina</A> LLAP is a long-running service so it will preempt memory for the llap queue. The best practice is to dedicate nodes to LLAP workloads. </P><P>You can utilize the LLAPContext in Spark which will stream data from HDFS to the spark executor but this is more of a Hive process and not Spark which can incorporate some masking and filtering security features but you may see a 3x-4x performance degradation.</P> Thu, 15 Feb 2018 00:13:04 GMT SQLShaw 2018-02-15T00:13:04Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Spark-and-llap-jobs-process/m-p/214460#M74576 <P>I'm running spark jobs in server-1 and if i can run llap daemons on the same server is there any impact on running spark jobs.</P> Wed, 14 Feb 2018 22:11:33 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Spark-and-llap-jobs-process/m-p/214460#M74576 Former Member 2018-02-14T22:11:33Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Spark-and-llap-jobs-process/m-p/214461#M74577 <P><A rel="user" href="https://community.cloudera.com/users/3134/sanchinakishore.html" nodeid="3134">@kishore sanchina</A> LLAP is a long-running service so it will preempt memory for the llap queue. The best practice is to dedicate nodes to LLAP workloads. </P><P>You can utilize the LLAPContext in Spark which will stream data from HDFS to the spark executor but this is more of a Hive process and not Spark which can incorporate some masking and filtering security features but you may see a 3x-4x performance degradation.</P> Thu, 15 Feb 2018 00:13:04 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Spark-and-llap-jobs-process/m-p/214461#M74577 SQLShaw 2018-02-15T00:13:04Z