Provides access to new merges and executes the actual merge
hasPendingMerges() · also: has_pending_mergesExpert: returns true if there are merges waiting to be scheduled.
merge(org.apache.lucene.index.MergePolicy.OneMerge merge)Merges the indicated segments, replacing them in the stack with a single segment.
The MergeScheduler calls this method to retrieve the next merge requested by the
MergePolicy
onMergeFinished(org.apache.lucene.index.MergePolicy.OneMerge merge)Does finishing for a merge.