Solr does not do transactions at all. The “commit” is to signal the end of a batch load and start the processing.
You can hack some things, but there is no way to roll back a delete or a update. If you need this, you need to use a database, not a search engine. I recommend MarkLogic. It is a full-featured database that includes search features. wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) On May 14, 2015, at 6:12 AM, Emir Arnautovic <emir.arnauto...@sematext.com> wrote: > Hi Amr, > As far as I am aware, SOLR does not support transaction isolation. If you > really need it, you will have to isolate it yourself. Easiest way is to > sacrifice concurrent updates. > Other way of achieving it would be to to index in separate indices (maybe in > memory) concurrently and than merge it with your main index in isolation. > There are probably better solutions but this is from the top of my head. > > Thanks, > Emir > > On 14.05.2015 14:21, Amr Ali wrote: >> Hello guys, >> >> Any expert advice this issue? >> >> >> -- >> Regards, >> Amr Ali >> >> City stars capital 8 - 3rd floor, Nasr city, Cairo, Egypt >> Ext: 278 >> >> >> >> -----Original Message----- >> From: Amr Ali >> Sent: Wednesday, May 13, 2015 10:58 AM >> To: solr-user@lucene.apache.org >> Subject: RE: Transactional Behavior >> >> Hello Emir, >> >> But this is not a transaction because if some of the bulk I need to add is >> committed; they will be searchable. In a transaction I need to insert a bulk >> of data (all bulk data will be searchable once) or roll it back according to >> some business scenarios. >> >> -- >> Regards, >> Amr Ali >> >> City stars capital 8 - 3rd floor, Nasr city, Cairo, Egypt >> Ext: 278 >> >> >> >> -----Original Message----- >> From: Emir Arnautovic [mailto:emir.arnauto...@sematext.com] >> Sent: Tuesday, May 12, 2015 10:46 PM >> To: solr-user@lucene.apache.org >> Subject: Re: Transactional Behavior >> >> Hi Amr, >> One option is to include transaction id in your documents and do delete in >> case of failed transaction. It is not cheap option - additional field if you >> don't have something to use to identify transaction. Assuming rollback will >> not happen to often deleting is not that big issue. >> >> Thanks, >> Emir >> >> -- >> Monitoring * Alerting * Anomaly Detection * Centralized Log Management Solr >> & Elasticsearch Support * http://sematext.com/ >> >> >> >> On 12.05.2015 22:37, Amr Ali wrote: >>> 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+I >>> ndex+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 >>>> >>>> >>>> >> -- >> Monitoring * Alerting * Anomaly Detection * Centralized Log Management Solr >> & Elasticsearch Support * http://sematext.com/ >> > > -- > Monitoring * Alerting * Anomaly Detection * Centralized Log Management > Solr & Elasticsearch Support * http://sematext.com/ >
