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https://issues.apache.org/jira/browse/CASSANDRA-10280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15015457#comment-15015457
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Branimir Lambov commented on CASSANDRA-10280:
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Patch LGTM.
Nit: [The no-arguments
constructor|https://github.com/apache/cassandra/compare/trunk...krummas:marcuse/10280-trunk#diff-687b688750330c623a9a3df3f7a59e78R67]
still specifies 1 day directly; it should use the
{{DEFAULT_MAX_WINDOW_SIZE_SECONDS}} constant.
> Make DTCS work well with old data
> ---------------------------------
>
> Key: CASSANDRA-10280
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10280
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Fix For: 2.1.x, 2.2.x, 3.x
>
>
> Operational tasks become incredibly expensive if you keep around a long
> timespan of data with DTCS - with default settings and 1 year of data, the
> oldest window covers about 180 days. Bootstrapping a node with vnodes with
> this data layout will force cassandra to compact very many sstables in this
> window.
> We should probably put a cap on how big the biggest windows can get. We could
> probably default this to something sane based on max_sstable_age (ie, say we
> can reasonably handle 1000 sstables per node, then we can calculate how big
> the windows should be to allow that)
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