NOTE: This method is now obsolete.
This will be removed in 3.0, when autoCommit=true is removed from IndexWriter.
Expert: returns max delay inserted before syncing a commit point. On Windows, at least, pausing before syncing can increase net indexing throughput. The delay is variable based on size of the segment's files, and is only inserted when using ConcurrentMergeScheduler for merges.
IndexWriter Class | Lucene.Net.Index Namespace