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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8388) Use ROW bloom filter for scanning
Date Tue, 23 Apr 2013 04:41:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Lars Hofhansl updated HBASE-8388:

    Attachment: 8388-trunk-v3.txt

This one passes the three tests that failed before.
It gets rid of useRowColBloom in StoreScanner and always tried to use a BF when there is one
Also it makes the KV handling for the BF optimization explicit in SQM (before the fake KVs
were implicitly filtered because of the time range/isDone checks).

This is by no means ready for commit, I am still reading the code and debugging a bit more
to fully understand how things interact.
> Use ROW bloom filter for scanning
> ---------------------------------
>                 Key: HBASE-8388
>                 URL: https://issues.apache.org/jira/browse/HBASE-8388
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>             Fix For: 0.98.0, 0.94.8, 0.95.1
>         Attachments: 8388-0.94-sketch.txt, 8388-0.94-v1.txt, 8388-trunk-v1.txt, 8388-trunk-v2.txt,
> Currently only ROWCOL BFs are used during the scanning process. It seems we could make
use of ROW BFs in StoreFileScanner.requestSeek.
> See HBASE-8362 for background.

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