Load balancing Google Professional Data Engineer GCP

Cloud Bigtable zone is managed by a master process
The process balances workload and data volume within clusters.
The master
- splits busier/larger tablets in half
- merges less-accessed/smaller tablets together and redistributes between nodes
- In spike of traffic, master splits tablet in two and moves new tablets to another node.
For write performance distribute writes as evenly as possible across nodes.
Useful to group related rows for efficient read of several rows at same time.