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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15076) Add getScanner(Scan scan, List<KeyValueScanner> additionalScanners) API into Region interface
Date Fri, 08 Jan 2016 04:27:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15088690#comment-15088690
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ramkrishna.s.vasudevan commented on HBASE-15076:
------------------------------------------------

Belated +1 on patch. The contract should be that the CP should code for Region interface now.


> Add getScanner(Scan scan, List<KeyValueScanner> additionalScanners) API into Region
interface
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15076
>                 URL: https://issues.apache.org/jira/browse/HBASE-15076
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: liu ming
>            Assignee: Anoop Sam John
>            Priority: Critical
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: HBASE-15076.patch
>
>
> HRegion method getScanner(Scan scan, List<KeyValueScanner> additionalScanners,
boolean copyCellsFromSharedMem) is protected.
> In Apache Trafodion, we need to invoke this getScanner method from a coprocessor. Since
it is protected, Trafodion must overload the HRegion class and overload this method into a
public method.
> It will be good to make this method public.
> It is very useful when one needs to combine several scan result in a single scanner.
> thanks,
> Ming



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