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f1ffb501f0
Scylla mistakenly allows an user to configure an invalid TWCS window_size <= 0, which effectively breaks the notion of compaction windows. Interestingly enough, a <= 0 window size should be considered an undefined behavior as either we would create a new window every 0 duration (?) or the table would behave as STCS, the reader is encouraged to figure out which one of these is true. :-) Cassandra, on the other hand, will properly throw a ConfigurationException when receiving such invalid window sizes and we now match the behavior to the same as Cassandra's. Refs: #2336