03 HBase

• HBase Table: Split it into multiple regions: replicated across servers.
• One Store per ColumnFamily (subset of columns with similar query patterns) per region.
• Memstore for each Store: in-memory updates to Store; flushed to disk when full.
• StoreFiles (HFile) for each store for each region: where the data live

Strong consistency (different from Cassandra): HBase Write-Ahead Log