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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
(ROW or ROWCOL).
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,
8388-trunk-v3.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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