[jira] [Commented] (HBASE-12452) Add regular expression based split policy

["He Liangliang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-12452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14283491#comment-14283491 ] 

He Liangliang commented on HBASE-12452:
---------------------------------------

use cases added.

> Add regular expression based split policy
> -----------------------------------------
>
>                 Key: HBASE-12452
>                 URL: https://issues.apache.org/jira/browse/HBASE-12452
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: He Liangliang
>            Assignee: He Liangliang
>            Priority: Minor
>         Attachments: HBASE-12452-V2.patch, HBASE-12452.patch
>
>
> 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.



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