Hi, thanks for replying.
this is on 4.5.0-2601 Community Edition (build-2601).
Compaction runs quite frequently on that cluster, some of the buckets have a relatively high write volume [does not take long for a significant portion of the keys to be re-written). Over the hour of the incident I can see it kicking in a few times, but no warning of note in the log.
Anything specific I should look for?