The ResourceManager adopts a high-availability solution. When the Active resourcemanager finds a fault, it can only start the standby resourcemanager through the built-in zookeeper and switch its state to active.

Redis uses the exist command to determine whether a key exists.

Which is not the channel type of Flume

In the Fusioninsight HD system, if dirty data is generated while the Loader job is running, the status of the Loader job execution result must be failed.

What is the default resource scheduler for queues in YARN?