Thanks Shawn. We do specify
<autoCommit> <maxDocs>30000</maxDocs> <maxTime>300000</maxTime> <openSearcher>false</openSearcher> </autoCommit> but I guess that still, the commitWithin 300 ms is a bad idea. We will definitely try playing with the configs you suggested. I still don't get the reason for a fast inserting when sending sets with low keys cardinality. But lets see what will happen after the changes. -- View this message in context: http://lucene.472066.n3.nabble.com/slow-indexing-when-keys-are-verious-tp4327681p4327703.html Sent from the Solr - User mailing list archive at Nabble.com.