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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13094) Consider Filters that are evaluated before deletes and see delete markers
Date Wed, 17 Aug 2016 16:56:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15424894#comment-15424894
] 

Lars Hofhansl commented on HBASE-13094:
---------------------------------------

PreDeleteFilter can wrap a FilterList too. But I agree, too much magic.
A wrinkle with #4 that occurred to me that than it would be possible to add two filters on
a scan/get, and the logic to combine their outcomes would be ... interesting (one filter,
which may be a FilterList, would run before deletes, and another, also perhaps a FilterList,
runs after. When the 1st passes and the second doesn't, combining these outcomes would be
tricky and hard to understand and reason about.)

> Consider Filters that are evaluated before deletes and see delete markers
> -------------------------------------------------------------------------
>
>                 Key: HBASE-13094
>                 URL: https://issues.apache.org/jira/browse/HBASE-13094
>             Project: HBase
>          Issue Type: Brainstorming
>          Components: regionserver, Scanners
>            Reporter: Lars Hofhansl
>         Attachments: 13094-0.98.txt
>
>
> That would be good for full control filtering of all cells, such as needed for some transaction
implementations.
> [~ghelmling]



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