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Marcus Eriksson commented on CASSANDRA-11660:
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Did you see the exception or did you find it by code inspection?
We should probably remove that entire block of code, iirc it was a workaround
before we had proper life cycle handling of sstables
> Dubious call to remove in CompactionManager.java
> ------------------------------------------------
>
> Key: CASSANDRA-11660
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11660
> Project: Cassandra
> Issue Type: Bug
> Components: Compaction
> Reporter: Max Schaefer
>
> I'm surprised by
> [this|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/compaction/CompactionManager.java#L1382]
> call to {{Iterator.remove()}} in
> {{org.apache.cassandra.db.compaction.antiCompactGroup}}: the iterator in
> question seems to come from
> [org.apache.cassandra.db.lifecycle.LifecycleTransaction.originals()|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/lifecycle/LifecycleTransaction.java#L419],
> which returns an unmodifiable set, so I would expect this call to always
> fail with an {{UnsupportedOperationException}}.
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