You must transition from Fair Scheduler to Capacity Scheduler when upgrading your
cluster to Cloudera. The transition process involves
automatically converting certain Fair Scheduler configuration to Capacity Scheduler
configuration prior to the upgrade and manual fine tuning after the upgrade.
In Cloudera, Capacity Scheduler is the default and supported
scheduler. You have to transition from Fair Scheduler to Capacity Scheduler when upgrading
from CDH to Cloudera Private Cloud Base.
The scheduler transition process includes migrating the YARN settings from Fair Scheduler to
Capacity Scheduler:
Preparing for cluster upgrade: As using the Upgrade Cluster Wizard in Cloudera
Manager you have to add the necessary services before you can start upgrading your
cluster. When you add the YARN QueueManager Service you have to copy your scheduler
settings. That is when you can use the fs2cs conversion utility to
automatically convert Fair Scheduler into Capacity Scheduler as a part of the Upgrade
Wizard in Cloudera Manager.
Upgrade the cluster to Cloudera Private Cloud Base.
Post-upgrade: Manually configure and fine-tune the scheduler after the upgrade is
completed.
For more information, click on the step that interests you:
