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Sylvain Lebresne commented on CASSANDRA-3456:
---------------------------------------------
Hum, apparently that Guava thing is not there yet (and doesn't seem it will be
added): http://code.google.com/p/guava-libraries/issues/detail?id=758
So if you strongly feel the digest should be created in the constructor, I'll
update but if there is nothing else, I'll just update the duplicated comment
line while committing.
> Automatically create SHA1 of new sstables
> -----------------------------------------
>
> Key: CASSANDRA-3456
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3456
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Attachments: 3456.patch
>
>
> Compressed sstables have block checksums which is great but non-compressed
> sstables don't for technical/compatibility reasons that I'm not criticizing.
> It's a bit annoying because when someone comes up with a corrupted file, we
> really have nothing to help discarding it as bitrot or not. However, it would
> be fairly trivial/cheap to compute the SHA1 (or other) of whole sstables when
> creating them. And if it's a new, separate, sstable component, we don't even
> have to implement anything to check the hash. It would only be there to
> (manually) check for bitrot when corruption is suspected by the user, or to
> say check the integrity of backups.
> I'm absolutely not pretending that it's a perfect solution, and for
> compressed sstables the block checksums are clearly more fine grained, but
> it's easy to add and could prove useful for non compressed files.
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