[boltdb-shipper] Chunk lifecycle clarification

Hello!

I’ve created this topic with a very specific question in mind, and that is:
When are chunks actually written to the filesystem? Is all data written to the filesystem at once (size limit, other factors maybe?) or do they get continously updated until the size limit is reached?

I intend to do some operations with the chunk files on a regular basis and knowing when a chunk file is done with will greatly improve performance.

Thanks in advance for all your help!