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https://issues.apache.org/jira/browse/CASSANDRA-6888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13959755#comment-13959755
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Marcus Eriksson commented on CASSANDRA-6888:
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+1
> Store whether a counter sstable still use some local/remote shards in the
> sstable metadata
> ------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-6888
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6888
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Sylvain Lebresne
> Assignee: Aleksey Yeschenko
> Fix For: 2.1 beta2
>
>
> CASSANDRA-6504 has made so we don't distinguish different type of shard in
> counters. Yet, even though we don't generate those local/remote type of
> shards, those won't disappear just by running upgradesstable, they need to be
> compacted away (and even then, they really only disappear if there has been a
> new update on the counter post-6504).
> But we want to get rid of those ultimately, since they make things like
> CASSANDRA-6506 less optimal. Now, even though the final step of that remain
> to be discussed, the first step is probably to keep track of whether such
> shard still exist in the system or not. That part is simple, we can just
> store a boolean in the SSTableMetadata to say whether or not said sstable
> still has at least one Cell using such old shard type.
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