What is the this table for ?
From SequenceManager javadoc:
Manages sequences of unique ID’‘s that get stored in the database. Database support for sequences varies widely; some don’'t use them at all. Instead, we handle unique ID generation with a combination VM/database solution.
A special table in the database doles out blocks of unique ID’'s to each virtual machine that interacts with Jive. This has the following consequences:
There is no need to go to the database every time we want a new unique id.
Multiple app servers can interact with the same db without id collision.
The order of unique id’'s may not correspond to the creation date of objects.
There can be gaps in ID’'s after server restarts since blocks will get “lost” if the block size is greater than 1.
Each sequence type that this class manages has a different block size value. Objects that aren’'t created often have a block size of 1, while frequently created objects such as entries and comments have larger block sizes.