How do you write column data in rocksDB in java?

Question

How do you write data in column format in rocksdb.

Example of columns can be Id, state, URL, fieldNames, query;

I should be able to read all data giving Id.

Answer 1

RocksDB is a key value store, so it doesn't have the concept of columns. What you can do, is to store a serialized object as value, which in your example would contain e.g. state, url, fieldnames and query, and use the id as key.