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Nemon Lou commented on HIVE-12538: ---------------------------------- A way to reproduce: 1, open beeline 2, run the following SQL: {noformat} create table if not exists test(id int); set hive.execution.engine=spark; set spark.yarn.queue=QueueA; select count(*) from test; select count(*) from test; {noformat} 3,check yarn UI,and there will be two yarn applications . Howerver,changing orders in step 2(the last setting command before actual query is not a spark related parameter),the problem will be gone: {noformat} create table if not exists test(id int); set spark.yarn.queue=QueueA; set hive.execution.engine=spark; select count(*) from test; select count(*) from test; {noformat} > After set spark related config, SparkSession never get reused > ------------------------------------------------------------- > > Key: HIVE-12538 > URL: https://issues.apache.org/jira/browse/HIVE-12538 > Project: Hive > Issue Type: Bug > Components: Spark > Affects Versions: 1.3.0 > Reporter: Nemon Lou > > Hive on Spark yarn-cluster mode. > After setting "set spark.yarn.queue=QueueA;" , > run the query "select count(*) from test" 3 times and you will find 3 > different yarn applications. > Two of the yarn applications in FINISHED & SUCCEEDED state,and one in RUNNING > & UNDEFINED state waiting for next work. > And if you submit one more "select count(*) from test" ,the third one will be > in FINISHED & SUCCEEDED state and a new yarn application will start up. -- This message was sent by Atlassian JIRA (v6.3.4#6332)