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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3415) When scanners have readers updated we should use original file selection algorithm rather than include all files
Date Wed, 05 Jan 2011 16:14:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12977817#action_12977817
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Jonathan Gray commented on HBASE-3415:
--------------------------------------

Yeah, now there's just getScanner() but the implementation of it is the old getScanner(scan,
columns).  Instead of being passed to the method, they are stored as class variables.

> When scanners have readers updated we should use original file selection algorithm rather
than include all files
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3415
>                 URL: https://issues.apache.org/jira/browse/HBASE-3415
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.20.7, 0.90.0
>            Reporter: Jonathan Gray
>             Fix For: 0.90.1
>
>         Attachments: HBASE-3415-v1.patch
>
>
> Currently when a {{StoreScanner}} is instantiated we use a {{getScanner(scan, columns)}}
call that looks at things like bloom filters and memstore only flags.  But when we get a changed
readers notification, we use {{getScanner()}} which just grabs everything.
> We should always use the original file selection algorithm.

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