Ozone

Overview # Ratis # https://github.com/apache/ratis Java Raft Implementation DataAPI - for data intensive application It was initially written for Ozone. Ozone Manager (OM) # https://ozone.apache.org/docs/edge/concept/ozonemanager.html Storage Container Manager (SCM) # https://ozone.apache.org/docs/edge/concept/storagecontainermanager.html Containers # Containers are the fundamental replication unit of Ozone/HDDS, they are managed by the Storage Container Manager (SCM) service. Containers are big binary units (5Gb by default) which can contain multiple blocks: Blocks are local information and not managed by SCM.