Gustavo Fernandes created ISPN-4650: --------------------------------------- Summary: MassIndexer should not use UpdateDocument when adding to Lucene Key: ISPN-4650 URL: https://issues.jboss.org/browse/ISPN-4650 Project: Infinispan Issue Type: Feature Request Security Level: Public (Everyone can see) Components: Embedded Querying Affects Versions: 7.0.0.Beta1 Reporter: Gustavo Fernandes Assignee: Gustavo Fernandes Fix For: 7.0.0.Beta2 The MassIndexer currently issues an Update operation to hibernate search backend, which in turn becomes a delete plus and add in the index. Lucene buffers those deletes queries and during merge it tries to 'apply' those deletes wasting a massive amount of time doing seeks and queries unnecessarily. Since the mass indexer wipes the index at the beginning, it should simply issue an add operation. Performance wise this make a huge difference: * indexing 50k documents brings the final merge time from 195s to 33s * indexing 200k documents brings the final merge time from 600s to 55s -- This message was sent by Atlassian JIRA (v6.2.6#6264)