I recently migrated non-smartstore indexes to Smartstore as per the doc - https://docs.splunk.com/Documentation/Splunk/8.2.4/Indexer/MigratetoSmartStore
However, on some of the indexers I noticed the local drive had high disk usage by Splunk, upon investigation noticed /opt/splunk/var/lib/splunk/index_name/datamodel_summary/ of various indexes is holding datamodel summary data that caused the high disk usage.
Considering summary replication is unnecessary for Smartstore, I dont believe the directory need to exist anymore. In this case, should empty these /datamodel_summary/ directories ?