hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1517) Implement inexpensive seek operations in HFile
Date Tue, 17 Aug 2010 14:06:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899412#action_12899412
] 

stack commented on HBASE-1517:
------------------------------

@Pranav Whats going on here?  You closed a bunch of issues.  Did the attached ReseekV10.patch
fix more than just one issue?

> Implement inexpensive seek operations in HFile
> ----------------------------------------------
>
>                 Key: HBASE-1517
>                 URL: https://issues.apache.org/jira/browse/HBASE-1517
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.20.0
>            Reporter: Jonathan Gray
>            Assignee: Pranav Khaitan
>             Fix For: 0.90.0
>
>         Attachments: ReseekV10.patch
>
>
> When we early-out of a row because of columns, versions, filters, etc... we seek to the
end of that row one key at a time.  We should do the seek at the HFile level in cases where
we would end up skipping blocks in the process.  This will be very common in cases with relatively
large rows and regex row filters.
> If calls that end up doing nothing are constant time, we could also call this to seek
to the next column (or even a specific column in ExplicitTracker case).

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message