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https://issues.apache.org/jira/browse/CASSANDRA-12949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17293734#comment-17293734
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Aleksey Yeschenko commented on CASSANDRA-12949:
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3.0 and 3.11 patches look fine to me, but I'm not 100% sure I like the added
field to {{TableMetadataRef}} in the trunk patch - and how we treat compaction
params in a different manner (which doesn't bother me as much in 3.X, but
ideally not mutate anything in-place in {{CFMetaData}} either).
> CFS.setCompressionParameters() method can affect schema globally
> ----------------------------------------------------------------
>
> Key: CASSANDRA-12949
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12949
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Distributed Metadata
> Reporter: Aleksey Yeschenko
> Assignee: Alex Petrov
> Priority: Normal
> Fix For: 2.2.x, 3.0.x, 3.11.x
>
>
> CFS.setCompressionParameters() method can affect schema globally, despite
> being intended as a way to change compression locally on just one node, for
> experimental purposes.
> CFS.setCompactionParamaters(), on the other hand, works correctly, by never
> modifying the {{CFMetaData}} object in-place.
> Its modification by CFS.setCompressionParameters() means that any subsequent
> ALTER that affects that table will pick up the change made by
> CFS.setCompressionParameters() and disseminate it to the rest of the cluster.
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