[jira] [Issue Comment Edited] (HBASE-5512) Add support for INCLUDE_AND_SEEK_USING_HINT

["Zhihong Yu (Issue Comment Edited) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-5512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13221559#comment-13221559 ] 

Zhihong Yu edited comment on HBASE-5512 at 3/3/12 3:24 PM:
-----------------------------------------------------------

ScanQueryMatcher:
{code}
} else if (filterResponse == ReturnCode.INCLUDE_AND_SEEK_NEXT_USING_HINT) {
+        
       }
{code}
You need make filterSeek=true? 
                
      was (Author: anoopsamjohn):
    ScanQueryMatcher
} else if (filterResponse == ReturnCode.INCLUDE_AND_SEEK_NEXT_USING_HINT) {
+        
       }
You need make filterSeek=true? 
                  
> Add support for INCLUDE_AND_SEEK_USING_HINT
> -------------------------------------------
>
>                 Key: HBASE-5512
>                 URL: https://issues.apache.org/jira/browse/HBASE-5512
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Zhihong Yu
>            Assignee: Lars Hofhansl
>         Attachments: 5512.txt
>
>
> This came up from HBASE-2038
> From Anoop:
> - What we wanted from the filter is include a row and then seek to the next row which we are interested in. I cant see such a facility with our Filter right now. Correct me if I am wrong. So suppose we already seeked to one row and this need to be included in the result, then the Filter should return INCLUDE. Then when the next next() call happens, then only we can return a SEEK_USING_HINT. So one extra row reading is needed. This might create even one unwanted HFileBlock fetch (who knows).
> Can we add reseek() at higher level?
> From Lars:
> Yep, for that we'd need to add INCLUDE_AND_SEEK_USING_HINT (similar to the INCLUDE_AND_SEEK_NEXT_ROW that we already have). Shouldn't be hard to add, I'm happy to do that, if that's the route we want to go with this.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira