Transitioning from Fair Scheduler to Capacity Scheduler
In Cloudera Data Platform, Capacity Scheduler is the default and supported scheduler. If you are using Fair Scheduler, you must transition to Capacity Scheduler during the upgrade process, and once the upgrade is finished you need to manually fine tune it.
From the Cloudera Data Platform Data Center 7.1 release, Cloudera provides a conversion tool,
called fs2cs conversion utility. This utility is a CLI application that is part of
the yarn CLI command. It generates
yarn-site.xml as output files.
The scheduler transition procedure has two main parts: automatic conversion during the upgrade process and manual configuration and fine-tuning after the upgrade from CDH to CDP Data Center is completed.