[HBASE-12452] Add regular expression based split policy

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Abandoned
• Component/s: regionserver
• Assignee: Unassigned
• Reporter: He Liangliang
• Created: 10/Nov/14 12:32
• Updated: 17/Jun/22 17:57
• Resolved: 17/Jun/22 17:57

Description

The current DelimitedKeyPrefixRegionSplitPolicy split policy is not flexible enough to describe the split point prefix in some case. A regex based split policy is proposed, for example:
^[^\x00]\x00[^\x00]\x00
means the split point will always be truncated to a prefix at the second \0 char.

The binary string support is quite useful when the rowkey encoded by a common data access library instead of concatenated manually by application developer.