[jira] [Assigned] (CASSANDRA-9265) Add checksum to saved cache files

["Ariel Weisberg (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-9265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ariel Weisberg reassigned CASSANDRA-9265:
-----------------------------------------

    Assignee: Daniel Chia

> Add checksum to saved cache files
> ---------------------------------
>
>                 Key: CASSANDRA-9265
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9265
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Ariel Weisberg
>            Assignee: Daniel Chia
>             Fix For: 2.2.1, 3.0 beta 1
>
>         Attachments: 0001-Add-checksum-to-saved-cache-files-CASSANDRA-9265.patch, 0002-trunk-CASSANDRA-9265.patch
>
>
> Saved caches are not covered by a checksum. We should at least emit a checksum. My suggestion is a large checksum of the whole file (convenient offline validation), and then smaller per record checksums after each record is written (possibly a subset of the incrementally maintained larger checksum).
> I wouldn't go for anything fancy to try to recover from corruption since it is just a saved cache. If corruption is detected while reading I would just have it bail out. I would rather have less code to review and test in this instance.



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