Changelog Features and Performance M3DB: Optimize snapshotting by 30x or more which can speedup bootstrapping for workloads with large snapshots. (#4093) Bug Fixes M3DB: Fix multi-segment field iterator support of double underscore prefixed fields alphanumerically before __m3ninx_id. (#4095) M3DB: Proactively GC Index entries belonging to a closed shard after cluster topology change. (#4094)
