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From "Misty Stanley-Jones (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6142) Javadoc in some Filters ambiguous
Date Mon, 09 Jun 2014 23:38:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025936#comment-14025936
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Misty Stanley-Jones commented on HBASE-6142:
--------------------------------------------

[~jrottinghuis] Are you still interested in helping out with this? I have a feeling it would
be good to have an exhaustive chapter about filters in general. I'm still too new to HBase
to be able to figure out how all the filters work easily. Did you take any notes about which
filters filter out versus filter in?

> Javadoc in some Filters ambiguous
> ---------------------------------
>
>                 Key: HBASE-6142
>                 URL: https://issues.apache.org/jira/browse/HBASE-6142
>             Project: HBase
>          Issue Type: Bug
>          Components: documentation
>    Affects Versions: 0.92.2, 0.94.1, 0.95.2
>            Reporter: Joep Rottinghuis
>            Assignee: Misty Stanley-Jones
>            Priority: Minor
>              Labels: noob
>
> The javadoc on some of the filter is somewhat confusing.
> The main Filter interface has methods that behave like a sieve; when filterRowKey returns
true, that means that the row is filtered _out_ (not included).
> Many of the Filter implementations work the other way around. When the condition is met
the value passes (ie, the row is returned).
> Most Filters make it clear when a values passes (passing through the filter meaning the
values are returned from the scan).
> Some are less clear in light of how the Filter interface works: WhileMatchFilter and
SingleColumnValueFilter are examples.



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