Hi Shawn Absolutely perfect. It is always great reading your answers again and again as you explain the concepts so very well. Three cheers and thanks for your reply.
Regards, Yavar ________________________________________ From: Shawn Heisey [s...@elyograg.org] Sent: Wednesday, December 07, 2011 12:00 AM To: solr-user@lucene.apache.org Subject: Re: Autocommit & Index Size On 12/6/2011 1:01 AM, Husain, Yavar wrote: > In solrconfig.xml I was experimenting with Indexing Performance. When I set > the maxDocs (in autoCommit) to say 10000 documents the index size is double > to if I just dont use autoCommit (i.e. keep it commented, i.e commit at the > end only after adding documents). > > Does autoCommit affect the index size and if so why (as it should only affect > performance) ? In other messages you have mentioned using MSSQL as a data source, so I am taking a wild guess and assuming that you are running on Windows. If that's not the case, then I don't know why you are seeing this behavior. On Windows, the timing involved when index segments are merged results in the old index segments being left on the disk, because they are still open for reading when Solr tries to delete them, and on Windows you cannot delete an open file. Later merge/optimize passes will remove files left over from the previous passes, but will themselves suffer from the same problem. I am guessing that when you don't have autoCommit turned on, Solr never opens an IndexReader on the segments as they are created, so Windows has no trouble deleting old segments after merging/optimizing. With autoCommit turned on, Solr opens the index segments and makes them searchable after every commit. Thanks, Shawn ****************************************************************************************** This message may contain confidential or proprietary information intended only for the use of the addressee(s) named above or may contain information that is legally privileged. If you are not the intended addressee, or the person responsible for delivering it to the intended addressee, you are hereby notified that reading, disseminating, distributing or copying this message is strictly prohibited. If you have received this message by mistake, please immediately notify us by replying to the message and delete the original message and any copies immediately thereafter. Thank you.- ****************************************************************************************** FAFLD
