[HBASE-7857] Sub-region management

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Incomplete
• Assignee: Unassigned
• Reporter: Ted Yu
• Created: 15/Feb/13 17:18
• Updated: 28/Mar/24 08:49
• Resolved: 21/Jun/13 04:26

Description

Sub-region provides a light weight management below region level.
Matt Corgan has a nice summary of the relationship between region size and number of regions on region server:
https://issues.apache.org/jira/browse/HBASE-7667?focusedCommentId=13575024&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13575024

HBASE-7667 proposed stripe compaction. However, to fully achieve fine-grained management, more components should participate:

• memstore flush should ideally have knowledge about what makes stripe compaction work efficiently
• we need to figure out where to store sub-region boundary information so that components have easy access. Boundary information should sustain after region moves from one server to another.

Since HBASE-7667 focuses on compaction aspect, this JIRA discusses sub-region management in other components so that we better understand the benefits and complexities.
 

Issue Links

• is related to: HBASE-7630 support large number of small regions
• relates to: HBASE-7667 Support stripe compaction