[HBASE-7716] Row Groups / Row Family / Entity Groups in HBase

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Client, regionserver
• Assignee: Unassigned
• Reporter: Enis Soztutar
• Created: 30/Jan/13 02:38
• Updated: 16/Jun/22 01:25
• Resolved: 11/Jun/22 18:18

Description

This issue is to discuss the possible addition to the HBase data model for "Row Groups".

As we are nearing 1.0, discussing this for 0.98 seems the right time, especially given that we have custom region split policies, local transactions, and API overhaul around data types -> bytes.

Row Groups are semantic groupings of rows in the Hbase data model. All rows within a given row group share the same row group key.
Row groups are similar to column families in HBase or locality groups in BigTable, but transposed to rows instead of columns. All the rows within a row group physically belong together, and served by a single region. This means that region boundaries cannot split the row group.

Row groups are not predefined, and are dynamic. There can be one row group per row.

Row keys are fully optional, and backwards compatible.

Issue Links

• relates to: HBASE-7721 Atomic multi-row mutations in META