Sorted:

What are MemStore and StoreFile in HBase?

How to implement data deduplication and retry mechanism in Storm?

What type of data stream is Storm used for processing?

What is the Storm framework?

What are the differences between Storm and Hadoop?

What is the process of writing data in HBase?

How to clean up and delete expired data in HBase?

What is the purpose of BloomFilter in HBase?

With which other software can Cassandra integrate?

How is the distributed lock mechanism implemented in HBase?