Hi all, I'm new to Mesos and to using Hadoop over Mesos. I've been trying to determine if Mesos memory configurations are affecting the memory that I allocate to Hadoop mappers and reducers (in Hadoop's mapped-site.xml file). When I set values to the mappers, something seems to interfere with allocating that memory.
Cluster setup: - 1 master node and 6 slave nodes - There is no /etc/mesos-slave/resource file, so memory is configured by Mesos. My understanding of this is that since there are no explicit memory settings on each slave node, Mesos is giving the asking application (Hadoop) all of the available memory minus 1GB for running the OS. But there still must be some mesos memory configuration somewhere, right? Something that knows how much a slice of memory is. I'm not sure if I know where that is. Any suggestions of how mesos' process of memory allocation could be affecting how Hadoop affects memory allocation would be appreciated. Thanks, Ajit
