SOLR Cloud - Full index replication

[Doss]

we are using 3 node solr (64GB ram/8cpu/12GB heap)cloud setup with version
7.X. we have 3 indexes/collection on each node. index size were about
250GB. NRT with 5sec soft /10min hard commit. Sometimes in any one node we
are seeing full index replication started running..  is there any
configuration which forces solr to replicate full , like 100/200 updates
difference if a node sees with the leader ? - Thanks.