zengrui created SPARK-29791: ------------------------------- Summary: Add a spark config to allow user to use executor cores virtually. Key: SPARK-29791 URL: https://issues.apache.org/jira/browse/SPARK-29791 Project: Spark Issue Type: Improvement Components: Scheduler Affects Versions: 2.1.0 Reporter: zengrui
We can config the executor cores by "spark.executor.cores". For example, if we config 8 cores for a executor, then the driver can only scheduler 8 tasks to this executor concurrently. In fact, most cases a task does not always occupy a core or more. More time, tasks spent on disk IO or network IO, so we can make driver to scheduler more than 8 tasks to this executor concurrently, it will make the whole job execute more quickly. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org