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hosein edited comment on SPARK-19655 at 2/18/17 11:07 AM: ---------------------------------------------------------- I connect to Vertica by JDBC and downloaded it's driver from this link: https://my.vertica.com/download/vertica/client-drivers/ I suppose if I take Spark JDBC jar file and define JDBC url in it, Spark works with this driver ... was (Author: hosein_ey): I connect to Vertica by JDBC and downloaded it's driver from this link: https://my.vertica.com/download/vertica/client-drivers/ I suppose if I take spark JDBC jar file and define JDBC url in it, spark works with this driver ... > select count(*) , requests 1 for each row > ----------------------------------------- > > Key: SPARK-19655 > URL: https://issues.apache.org/jira/browse/SPARK-19655 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.1.0 > Reporter: hosein > Priority: Minor > > when I want query select count( * ) by JDBC and monitor queries in database > side, I see spark requests: select 1 for destination table > it means 1 for each row and it is not optimized -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org