GC jobs are hanging or not finishing after upgrade to 3.4 for some users.

Staff are currently mystified. Customers are rolling back to 3.3.

“there was the improvements to reduce the number of multiple atime updates on already seen chunks (as keep track by the cache) and the change in iteration logic to better correlate index files, as well as the bugfix for the possibly untouched chunks. Why this has negative effects with your particular setup remains to be clarified, until now the possible cause is only hypothesis.”