[jira] [Commented] (HBASE-1183) New MR splitting algorithm and other new features need a way to split a key range in N chunks

["Nicolas Spiegelberg (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13131250#comment-13131250 ] 

Nicolas Spiegelberg commented on HBASE-1183:
--------------------------------------------

@jgray : just wondering what the {1,0} prepend in split() algorithm fixed?  Looks like any integer conversion problems would be solved by issuing padTail()
                
> New MR splitting algorithm and other new features need a way to split a key range in N chunks
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-1183
>                 URL: https://issues.apache.org/jira/browse/HBASE-1183
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Minor
>             Fix For: 0.20.0
>
>         Attachments: hbase-1183-v1.patch, hbase-1183-v2.patch, hbase-1183-v3.patch, hbase-1183-v4.patch
>
>
> For HBASE-1172 and other functionality coming soon, we need to be able to take a [start,stop) range and divide it into chunks.
> For example, we have 10 regions but want to run 30 maps.  We need to divide each region into three key ranges for the start/stop of each scanner.
> Implementing using java.math.BigInteger
> Will also include a couple additional helpers in Bytes to make life easy.

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