Dear Xuneng, > Is it safe to free the substructure from within rel_sync_cache_relation_cb()?
You referred the comment in rel_sync_cache_relation_cb() right? I understood like that we must not access to any *system caches*, from the comment. Here we do not re-build caches so that we do not access to the syscaches - it is permitted. I'm happy if you also confirm the point. > I’ also interested in the reasoning behind setting > NINVALIDATION_THRESHOLD to 100. This is the debatable point of this implementation. I set to 100 because it was sufficient with the provided workload, but this may cause the replication lag. We may have to consider a benchmark workload, measure data, and consider the appropriate value. 100 is just an initial point. Best regards, Hayato Kuroda FUJITSU LIMITED
