What does this error mean?
This error means that the transaction tidier mechanism in Cassandra attempted to abort a transaction before the LogFile reference is garbage collected.
Why does this error occur?
During compactions, Cassandra tracks SSTable files using a transaction mechanism. If for some reason Cassandra forgot to close a transaction or if the transaction journal was never properly created in the first place the transaction tidier mechanism will try to abort the transaction before the LogFile reference is garbage collected.
How do you fix this error?
There is no specific fix for this error. Further investigation will be needed. A support ticket should be filed with DataStax Support.