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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18165) Predicate based deletion during major compactions
Date Mon, 05 Jun 2017 20:55:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037574#comment-16037574
] 

Lars Hofhansl commented on HBASE-18165:
---------------------------------------

[~jamestaylor]

> Predicate based deletion during major compactions
> -------------------------------------------------
>
>                 Key: HBASE-18165
>                 URL: https://issues.apache.org/jira/browse/HBASE-18165
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Lars Hofhansl
>
> In many cases it is expensive to place a delete per version, column, or family.
> HBase should have way to specify a predicate and remove all Cells matching the predicate
during the next compactions (major and minor).
> Nothing more concrete. The tricky part would be to know when it is safe to remove the
predicate, i.e. when we can be sure that all Cells matching the predicate actually have been
removed.
> Could potentially use HBASE-12859 for that.



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