Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@cassandra.apache.org
Date: Tue, 9 Aug 2011 13:58:27 +0000 (UTC)
From: "Pavel Yaskevich (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: 
 <1285779268.20095.1312898307349.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: <12053120.58071289077823754.JavaMail.jira@thor>
Subject: [jira] [Commented] (CASSANDRA-1717) Cassandra cannot detect
 corrupt-but-readable column data
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/CASSANDRA-1717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081637#comment-13081637 ] 

Pavel Yaskevich commented on CASSANDRA-1717:
--------------------------------------------

I still think that such change is a matter of the separate ticket as we will want to change CRC stuff globally, we can make own Checksum class with will return int value, apply performance improvements mentioned by HADOOP-6148 to it and use system-wide.

Is there anything else that keeps this from being committed?

> Cassandra cannot detect corrupt-but-readable column data
> --------------------------------------------------------
>
>                 Key: CASSANDRA-1717
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1717
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Pavel Yaskevich
>             Fix For: 1.0
>
>         Attachments: CASSANDRA-1717-v2.patch, CASSANDRA-1717.patch, checksums.txt
>
>
> Most corruptions of on-disk data due to bitrot render the column (or row) unreadable, so the data can be replaced by read repair or anti-entropy.  But if the corruption keeps column data readable we do not detect it, and if it corrupts to a higher timestamp value can even resist being overwritten by newer values.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira