Sorted:

dependency relationships and join operations in Storm?

How is Kafka high availability achieved?

How to perform a JOIN operation in Hive?

What is the execution process of MapReduce tasks in Hive

What is TransactionalTopology in Storm?

What are the different ways to set up a PG database cluster?

How to interact with external storage systems and synchronize data in Storm?

How to retrieve the request type of an input value in PHP?

What is the purpose of the intval function in PHP?

How to implement data encryption and decryption in Storm?