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Posted to dev@hbase.apache.org by "Jean-Daniel Cryans (JIRA)" <ji...@apache.org> on 2010/02/24 19:03:32 UTC
[jira] Assigned: (HBASE-2258) The WhileMatchFilter doesn't delegate
the call to filterRow()
[ https://issues.apache.org/jira/browse/HBASE-2258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jean-Daniel Cryans reassigned HBASE-2258:
-----------------------------------------
Assignee: stack
> The WhileMatchFilter doesn't delegate the call to filterRow()
> -------------------------------------------------------------
>
> Key: HBASE-2258
> URL: https://issues.apache.org/jira/browse/HBASE-2258
> Project: Hadoop HBase
> Issue Type: Bug
> Components: filters
> Affects Versions: 0.20.3
> Reporter: Dan Washusen
> Assignee: stack
> Fix For: 0.20.4, 0.21.0
>
> Attachments: HBASE-2258.patch
>
>
> While testing the recent MemStoreScanner slowness I noticed that each scan in the randomSeekScan test takes about 19 seconds to complete. The scan in question provides a startRow and a WhileMatchFilter containing a PageFilter that asks for 120 rows. I would have expected this scan to return in roughly the same amount of time as a scan that specifies a startRow and stopRow that spans a similar number of rows.
> As it turns out this is an issue with the WhileMatchFilter. The WhileMatchFilter is not delegating the call the filterRow() down the the PageFilter. As a result the PageFilter never increments the rowsAccepted counter.
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