hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Liyin Tang (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5274) Filter out the expired store file scanner during the compaction
Date Wed, 25 Jan 2012 00:50:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192730#comment-13192730
] 

Liyin Tang commented on HBASE-5274:
-----------------------------------

I am not sure why the Phabricator add so many duplicated comments. Sorry about the spamming.
@Todd, HBase-5274 tries to avoid scanning any data from the expired store file scanner. So
compacting the expired store file will be very cheap. And HBase-5199 actually is related to
HBASE-4717. which performs the "age-out" compaction.
                
> Filter out the expired store file scanner during the compaction
> ---------------------------------------------------------------
>
>                 Key: HBASE-5274
>                 URL: https://issues.apache.org/jira/browse/HBASE-5274
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>         Attachments: D1407.1.patch, D1407.1.patch, D1407.1.patch, D1407.1.patch, D1407.1.patch
>
>
> During the compaction time, HBase will generate a store scanner which will scan a list
of store files. And it would be more efficient to filer out the expired store file since there
is no need to read any key values from these store files.
> This optimization has been already implemented on 89-fb and this is the building block
for HBASE-5199 as well. It is supposed to be no-ops to compact the expired store files.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message