Which of the following functions can Spark provide? (Multiple choice)

If part of the information is allowed to be lost in the process of message processing, which of the following methods can be used to close the message reliability processing mechanism? (Multiple choice)

Flume is used to collect data, and the basic unit of data transmitted by the device is?

In Flink, the checkpoint mechanism can ensure that when an application fails during operation, it can be restored from a certain checkpoint. In this process, stream snapshots are created in sequence according to the order of data inflow.

If there are only Default, QueueA and QueueB sub-queues in the YARNU group, then their capacity is allowed to be set to 60%, 25%, and 22% respectively.