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https://issues.apache.org/jira/browse/HBASE-1647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732753#action_12732753
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Clint Morgan commented on HBASE-1647:
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This patch fixes a few of my filter backed tests that were failing.
> Filter#filterRow is called too often, filters rows it shouldn't have
> --------------------------------------------------------------------
>
> Key: HBASE-1647
> URL: https://issues.apache.org/jira/browse/HBASE-1647
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Doğacan Güney
> Fix For: 0.20.0
>
> Attachments: HBASE-1647-v2.patch, HBASE-1647-v3.patch,
> HBASE-1647-v4.patch, HBASE-1647-v5.patch, HBASE-1647-v6.patch, ScanBug.java,
> scanfilter.patch
>
>
> Filter#filterRow is called from ScanQueryMatcher#filterEntireRow which is
> called from StoreScanner.next. However, if I understood the code correctly,
> StoreScanner processes KeyValue-s in a column-oriented order (i.e. after
> row1-col1 comes row2-col1, not row1-col2). Thus, when filterEntireRow is
> called, in reality, the filter only processed (via filterKeyValue) only one
> column of a row.
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