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Posted to commits@cassandra.apache.org by "Vijay (JIRA)" <ji...@apache.org> on 2012/12/27 22:38:12 UTC

[jira] [Commented] (CASSANDRA-3648) Repair should validate checksums before streaming

    [ https://issues.apache.org/jira/browse/CASSANDRA-3648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540172#comment-13540172 ] 

Vijay commented on CASSANDRA-3648:
----------------------------------

I think we should store the offset, checksum for chunks (buffered chunks in SequentialWriter) to metadata. While streaming we can just check the checksum before streaming... 
But we might not need checksum over the wire (let TCP handle errors)?
                
> Repair should validate checksums before streaming
> -------------------------------------------------
>
>                 Key: CASSANDRA-3648
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3648
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Jonathan Ellis
>            Priority: Minor
>             Fix For: 2.0
>
>
> We have block checksums and sha1 full-file hashes, but currently we do not validate these before streaming in a repair.

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