Hi Kevin Yes, its possible. Please refer to https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/ResourceManagerHA.html This explain how to configure RM in HA mode when one can be standby if that what you are looking for.
Each NM sends a heartbeat like in every second to RM, and RM will do allocation based on free resources available in these nodes during heartbeat. - Sunil On Sat, Jun 8, 2019 at 6:30 AM kevin su <pings...@gmail.com> wrote: > Hi all, > > There is a way to start two Namenode, and request for both of them > > So can we start two RM as well ? > > Another question is every times if we want to allocate resource from RM, > it will find which node manager has resources. > > Is RM send every request to all node manager, and get all NM report, or > there is a meta-data in RM, so it will directly find one of NM to get > resources ? > > Thanks in advanced > > Kevin > Best regards >
