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From "Jonathan Gray (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4410) FilterList.filterKeyValue can return suboptimal ReturnCodes
Date Thu, 13 Oct 2011 01:23:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13126286#comment-13126286
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Jonathan Gray commented on HBASE-4410:
--------------------------------------

My comeback is that Lars is right and I f-ed it up.  I was supposed to make a new patch but
forgot about this.  I was a bit angry I came up with such a nice elegant solution that was
fundamentally broken.  ;)

Will try to get to this next week.
                
> FilterList.filterKeyValue can return suboptimal ReturnCodes
> -----------------------------------------------------------
>
>                 Key: HBASE-4410
>                 URL: https://issues.apache.org/jira/browse/HBASE-4410
>             Project: HBase
>          Issue Type: Improvement
>          Components: filters
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Minor
>             Fix For: 0.92.0
>
>         Attachments: HBASE-4410-v1.patch
>
>
> FilterList.filterKeyValue does not always return the most optimal ReturnCode in both
the AND and OR conditions.
> For example, if you have F1 AND F2, F1 returns SKIP.  It immediately returns the SKIP.
 However, if F2 would have returned NEXT_COL or NEXT_ROW or SEEK_NEXT_USING_HINT, we would
actually be able to return the more optimal ReturnCode from F2.
> For AND conditions, we can always pick the *most restrictive* return code.
> For OR conditions, we must always pick the *least restrictive* return code.
> This JIRA is to review the FilterList.filterKeyValue() method to try and make it more
optimal and to add a new unit test which verifies the correct behavior.

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