[
https://issues.apache.org/jira/browse/CASSANDRA-3127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286277#comment-13286277
]
Jonathan Ellis commented on CASSANDRA-3127:
-------------------------------------------
Did you experiment w/ Snappy vs LZF?
Creating a new DOS + LZFOS per message seems pretty wasteful, couldn't we
compress the entire stream instead? Since we can't enable compression for
old-version nodes anyway. (Which needs to be handled, btw.)
That would also give us better compression by compressing multiple messages
together -- we could rely on the flush in writeConnected that only flushes if
there are no more messages on the queue, so under load compression would
*improve* which is a cool property.
> Message (inter-node) compression
> --------------------------------
>
> Key: CASSANDRA-3127
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3127
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Marcus Eriksson
> Priority: Minor
> Attachments: CASSANDRA-3127.patch, CHECK_SIZES-CASSANDRA-3127.patch
>
>
> CASSANDRA-3015 adds compression of streams. But it could be useful to also
> compress some messages.
> Compressing messages is easy, but what may be little bit trickier is when and
> what messages to compress to get the best performances.
> The simple solution would be to just have it either always on or always off.
> But for very small messages (gossip?) that may be counter-productive. On the
> other side of the spectrum, this is likely always a good choice to compress
> for say the exchange of merkle trees across data-centers. We could maybe
> define a size of messages after which we start to compress. Maybe the option
> to only compress for cross data-center messages would be useful too (but I
> may also just be getting carried away).
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
