: I noticed that Magento is using the overwritePending commit directive but I : can't find any documentation on this. Does the overwritePending directive : purge any added docs since the last commit? Any help would be appreciated.
overwritePending has never been a commit option. it was an "add" option in Solr 3.x, but has been deprecated for a long itme in place of the singular "overwrite" option... https://wiki.apache.org/solr/UpdateXmlMessages#Optional_attributes_for_.22add.22 ...it's just a way of letting clients tell solr that solr doesn't need to do the normal checks to overwrite existing documents with the same key -- because the client is taking responsibility for garunteeing that a document with the same key doesn't already exist. -Hoss
