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https://issues.apache.org/jira/browse/CASSANDRA-13290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15892947#comment-15892947
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Jeff Jirsa commented on CASSANDRA-13290:
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See also CASSANDRA-8911
> Optimizing very small repair streams
> ------------------------------------
>
> Key: CASSANDRA-13290
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13290
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Benjamin Roth
>
> I often encountered repair scenarios, where a lot of tiny repair streams were
> created. This results in hundrets, thousands or even ten-thousands super
> small SSTables (some bytes to some kbytes).
> This puts a lot of pressure on compaction and may even lead to a crash due to
> too many open files - I also encountered this.
> What could help to avoid this:
> After CASSANDRA-12888 is resolved, a tiny stream (e.g. < 100kb) could be sent
> through the write path to be buffered by memtables instead of creating an
> SSTable each.
> Without CASSANDRA-12888 this would break incremental repairs.
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