cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jeremiah Jordan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5515) Track sstable coldness
Date Wed, 25 Sep 2013 22:24:03 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778169#comment-13778169
] 

Jeremiah Jordan commented on CASSANDRA-5515:
--------------------------------------------

K, just read your question, hadn't read the patch yet. :)
                
> Track sstable coldness
> ----------------------
>
>                 Key: CASSANDRA-5515
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5515
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Tyler Hobbs
>             Fix For: 2.0.2
>
>         Attachments: 0001-Track-row-read-counts-in-SSTR.patch, 5515-2.0-v1.txt
>
>
> Keeping a count of reads per-sstable would allow STCS to automatically ignore cold data
rather than recompacting it constantly with hot data, dramatically reducing compaction load
for typical time series applications and others with time-correlated access patterns.  We
would not need a separate age-tiered compaction strategy.
> (This will really be useful in conjunction with CASSANDRA-5514.)

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message