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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2009/10/02 06:22:23 UTC
[jira] Updated: (HBASE-1831) Scanning API must be reworked to allow
for fully functional Filters client-side
[ https://issues.apache.org/jira/browse/HBASE-1831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-1831:
-------------------------
Attachment: 1831-v4.patch
Adds two ugly tests. One under filter that puts up three regions and then checks at the Region level that filters are doing right thing (Why can't i instantiate an HRegionServer and test from its interface -- its currently way too hard to put one of these up... requires there be a master.. .it shouldn't). Other test if ugly from client side. Splits table then makes sure RowFilter is returning right results around the row boundary. I can assert counts but I can't assert that only a subset of regions are being accessed with asserts. To do the latter, I added logging and it required eyeballing but you can see in the logs that yes we do not go to next region if filter says we're done.
A few tests seem to be failing.... Looking into it.
> Scanning API must be reworked to allow for fully functional Filters client-side
> -------------------------------------------------------------------------------
>
> Key: HBASE-1831
> URL: https://issues.apache.org/jira/browse/HBASE-1831
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Jonathan Gray
> Priority: Critical
> Fix For: 0.20.1, 0.21.0
>
> Attachments: 1831-v2.patch, 1831-v3.patch, 1831-v4.patch, 1831.patch
>
>
> Right now, a client replays part of the Filter locally by calling filterRowKey() and filterAllRemaining() to determine whether it should continue to the next region.
> A number of new filters rely on filterKeyValue() and other calls to alter state. It's also a false assumption that all rows/keys affecting a filter returning true for FAR will be seen client-side (what about those that failed the filter).
> This issue is about dealing with Filters properly from the client-side.
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