Hi, You might want to check out the documentation, which goes over split-shard in a bit more detail: https://lucene.apache.org/solr/guide/7_6/collections-api.html#CollectionsAPI-splitshard
To answer your question directly though, no. Split-shard creates two new subshards, but it doesn't do anything to remove or cleanup the original shard. The original shard remains with its data and will delegate future requests to the result shards. Hope that helps, Jason On Tue, Jan 22, 2019 at 4:17 AM zhenyuan wei <tins...@gmail.com> wrote: > > Hi, > If I split shard1 to shard1_0,shard1_1, Is the parent shard1 will > never be clean up? > > > Best, > Tinswzy