You could check the index version. See http://wiki.apache.org/solr/SolrReplication. Every time a commit is issued, the index version is incremented.
but you could also use the "backupAfter" feature, explained also in http://wiki.apache.org/solr/SolrReplication Tomás On Mon, Apr 16, 2012 at 11:07 AM, Peter Dikant <peter.dik...@mgm-tp.com>wrote: > Hi there, > > we have a Solr index which is mostly used for search queries. We add new > documents to the index only once a day. We want to backup the index files > once the new documents have been indexed and committed. > > Our current solution with Solr 1.4 is to monitor the "optimized" flag of > the index. Once the index is no longer optimized, we assume that we need to > start a backup. The backup is run as a postOptimize script. So we only > trigger the optimize and the backup is done automatically. > > Now with Solr 3.5 the isOptimized() method has been marked deprecated with > the comment that one should check the segment count with > getSequentialSubReaders(). > > Is it safe to assume that the segment count will be greater than 1 for any > index which contains committed documents and is not optimized? Is it > guaranteed that once the maximum segment count has been reached and the > segments have been merged, that the segment count will still be greater > than 1? > > Is there a better way to detect changes in an index? > > Thanks, > Peter > > -- > mgm technology partners GmbH > Frankfurter Ring 105a > 80807 München > Tel. +49 (89) 35 86 80-321 > Fax +49 (89) 35 86 80-288 > E-Mail peter.dik...@mgm-tp.com > Innovation Implemented. > Sitz der Gesellschaft: München > Geschäftsführer: Hamarz Mehmanesh > Handelsregister: AG München HRB 161298 > > _________________________________________________________________________________________ > ACHTUNG: Die Information in dieser E-Mail ist vertraulich und unterliegt > zusätzlich gesetzlichen Schutzrechten. Sie ist nur für die genannten > Empfänger bestimmt. Wenn Sie diese Nachricht irrtümlich erhalten haben, > benachrichtigen Sie uns bitte unverzüglich durch Antwort auf diese E-Mail > oder durch Anruf unter der obigen Nummer und löschen Sie die E-Mail samt > aller Anlagen. Beachten Sie bitte, dass jede nicht genehmigte > Kenntnisnahme, Kopie, Weiterverbreitung oder anderweitige Verwendung der > Information verboten ist. Vielen Dank. > NOTICE: The information contained in this e-mail is confidential or may > otherwise be legally privileged. It is intended for the named recipient > only. If you have received it in error, please notify us immediately by > reply or by calling the telephone number above and delete this message and > all its attachments. Please note that any unauthorized review, copying, > disclosing or otherwise making use of the information is strictly > prohibited. Thank you. > >
