Master Operations

Let's learn the different operations performed by the master.

The master executes all namespace operations. Furthermore, it manages chunk replicas throughout the system. It is responsible for:

• Making replica placement decisions
• Creating new chunks and hence replicas
• Making sure that chunks are fully replicated according to the replication factor
• Balancing the load across all the ChunkServers
• Reclaim unused storage

Namespace management and locking

The master acquires locks over a namespace region to ensure proper serialization and to allow multiple operations at the master