Re: EMR vCores and slot allocation

2016-05-02 Thread Fabian Hueske
The slot configuration should depend on the complexity of jobs. Since each slot runs a "slice" of a program, one slot might potentially execute many concurrent tasks. For complex jobs you should allocate more than one core for each slot. 2016-05-02 10:12 GMT+02:00 Robert Metzger : > Hi Ken, > s

Re: EMR vCores and slot allocation

2016-05-02 Thread Robert Metzger
Hi Ken, sorry for the late response. The number of CPU cores we show in the web interface is based on what the JVM tells us from "Runtime.getRuntime().availableProcessors();". I'm not sure how tthe processor count behaves on Amazon VMs. Given that each of your servers has 8 vCores, I would set the