toastdriven/pysolr — pull request #139 by upayavira (2014-11-27 10:25:20+00:00)
Title: Optimize is no longer recommended

Since Solr 3.6, Solr has used the TieredMergePolicy which makes,
in most scenarios, optimization a harmful rather than beneficial
step.

We should leave the feature in the client, but not publicize it, IMO.