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https://issues.apache.org/jira/browse/HBASE-13094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15423556#comment-15423556
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Andrew Purtell commented on HBASE-13094:
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bq. When SQM detects this class, it is will evaluate the wrapped filter's
filterKeyValue method before delete markers and columns are filtered.
Hmm. Feels like special magic to me.
I'd go for #4. It's explicit. It allows for registration of a filter list,
although I suppose "PreDeleteFilter" could become an empty interface used for
tagging and then something could extend FilterList and implement that tagging
iface... (EVen more hacky)
> 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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