Regarding the order of the YARN scheduler allocating resources, which one of the following descriptions is correct?

The overall process of kafka Consumer writing data is that the Consumer connects to the Leader Broker where the specified Topic Partition is located, and is used to actively obtain messages from Kafka.

Driven Source is flume proactively obtains data periodically.

In order to optimize performance, it is recommended to deploy LdapServer and KrbServer on the same node in all clusters.

Which instance must the Loader instance in Fusionlnsight HD be deployed with?