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Xuefu Zhang commented on HIVE-12615: ------------------------------------ Okay. It can be done, but just takes some extra work. Let's close it for now and revisit if there are more complaints about this. > Do not start spark session when only explain > --------------------------------------------- > > Key: HIVE-12615 > URL: https://issues.apache.org/jira/browse/HIVE-12615 > Project: Hive > Issue Type: Improvement > Components: Spark > Affects Versions: 1.3.0, 2.1.0 > Reporter: Nemon Lou > Assignee: Nemon Lou > Priority: Minor > Attachments: HIVE-12615.patch > > > When using beeline -e "set hive.execution.engine=spark;explain select > count(*) from sometable",it's very slow due to starting of spark session on > yarn. -- This message was sent by Atlassian JIRA (v6.3.4#6332)