I'm upgrading my ES cluster from V 5 to V7, I've noticed that space usage has significantly been reduced, is that normal?
my V5 cluster: 10B Documents, ~2.2 TB
V7 Cluster: 10B Documents, ~1.5 TB
(Same exact documents, a little tweaking to mappings since some settings were removed/added, no sorting was done)
Where can i read more into why/how this is happening?