SolrClient::optimize

(PECL solr >= 0.9.2)

SolrClient::optimize — Defragments the index

public SolrUpdateResponse SolrClient::optimize ([ int $maxSegments = "1" [, bool $waitFlush = true [, bool $waitSearcher = true ]]] )

Defragments the index for faster search performance.

maxSegments: Optimizes down to at most this number of segments. Since Solr 1.3
waitFlush: Block until index changes are flushed to disk.
waitSearcher: Block until a new searcher is opened and registered as the main query searcher, making the changes visible.

Returns a SolrUpdateResponse on success or throws a SolrClientException on failure.

SolrClient::commit() - Finalizes all add/deletes made to the index
SolrClient::rollback() - Rollbacks all add/deletes made to the index since the last commit