Please check this https://lucene.apache.org/solr/4_1_0/solr-solrj/org/apache/solr/client/solrj/SolrServer.html#rollback() "Note that this is not a true rollback as in databases. Content you have previously added may have been committed due to autoCommit, buffer full, other client performing a commit etc."
It is not a real rollback if you have two threads T1 and T2 that are adding. If T1 is adding 500 and T2 is adding 3 then T2 will commit its 3 document PLUS the documents added by T1 (because T2 will finish add/commit before T2 due to the documents number). Solr transactions are "server side" only. -- Regards, Amr Ali City stars capital 8 - 3rd floor, Nasr city, Cairo, Egypt Ext: 278 -----Original Message----- From: Jack Krupansky [mailto:jack.krupan...@gmail.com] Sent: Tuesday, May 12, 2015 10:24 PM To: solr-user@lucene.apache.org Subject: Re: Transactional Behavior Solr does have a <rollback/> command, but it is an expert feature and not so clear how it works in SolrCloud. See: https://cwiki.apache.org/confluence/display/solr/Uploading+Data+with+Index+Handlers and https://wiki.apache.org/solr/UpdateXmlMessages#A.22rollback.22 -- Jack Krupansky On Tue, May 12, 2015 at 12:58 PM, Amr Ali <amr_...@siliconexpert.com> wrote: > Hello, > > I have a business case in which I need to be able for the rollback. > When I tried add/commit I was not able to prevent other threads that > write to a given Solr core from committing everything. I also tried > indexwriter but Solr did not get changes until we restart it. > > > -- > Regards, > Amr Ali > > City stars capital 8 - 3rd floor, Nasr city, Cairo, Egypt > Ext: 278 > > >
