What does this error mean?
This error means an InterruptedException occurred during a forced shutdown (e.g. nodetool stop COMPACTION) of a compaction process.
Why does this error occur?
This error occurs if a thread is interrupted during a CompactionManager.forceShutdown call.
How do you fix this error?
This error should not occur from within Cassandra because Cassandra does not interrupt threads. Further investigation is necessary and a ticket should be filed with DataStax Support.