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
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
Hi Kevin,
It is possible to have multiple Namenodes in a HA setup. One Active Namenode
and multiple Standby Namenodes.
The Active Namenodes serves all the requests.
In case of failure of Active Namenode, one of the standby takes up its place
and acts as Active to serve the requests there after.
