Thanks Erick. I completely did not get the point you are trying to make w.r.t my question. I'll add it again according to your example.
In the example you gave w.r.t P1.1, P2.1, P1.2, P2.2 and P1 issues a commit, I understand that all documents are committed. Now what happens when P1 issues a commit and P2 sends another document, say P2.3, to index at the same time ? As you said the requests are treated as if they are serial - if P1.commit is the first one among P1.commit & P2.3, P2.3 will be indexed into a new segment ? Regards, Phani. ----- Phani Chaitanya -- View this message in context: http://lucene.472066.n3.nabble.com/Committing-when-indexing-in-parallel-tp4089953p4090120.html Sent from the Solr - User mailing list archive at Nabble.com.