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https://issues.apache.org/jira/browse/CASSANDRA-3452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13143505#comment-13143505
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Edward Capriolo commented on CASSANDRA-3452:
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This is pretty interesting. Ideally I was thinking of being able to do a head
to head test.
IE. You could convert a single node to a compressed LCS node. It would take
reads and writes, but you would not do any repairs, or joins, or moves or
possibly any other schema changes. At some point you would evaluate the
performance vs another node in your cluster, look at your performance and make
the decision. If you want the change to happen across the cluster or be undone.
I know my request is asking something to the effect of 'Help me test in
production', But coming up with hardware and a system to do an actual test of
production load is difficult. If we were able to restrict a schema update to
one node we have a way to mitigate risk. For a major change like compression or
LCS that will drastically reshape a lot of physical data on disk and could
drastically change performance hopefully in a good way, but if it did not work
out well, performance could suffer for a long time while the underlying data
tables rewrite themselves and you get back to where you started.
> Create an 'infinite bootstrap' mode for sampling live traffic
> -------------------------------------------------------------
>
> Key: CASSANDRA-3452
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3452
> Project: Cassandra
> Issue Type: New Feature
> Reporter: Brandon Williams
> Assignee: Brandon Williams
>
> You may want to, for example, test a new compaction strategy with live
> traffic to see how it will fare. In this mode, the node would follow the
> bootstrap procedure as normal, but never fully join the ring.
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