I craw webages with Nutch and send them to Solr for indexing. There are two parameters to send data into Solr. One of them is -index and the other one is -reindex. I just want to learn what they do.
2013/4/4 Jack Krupansky <j...@basetechnology.com> > Technically, update and add are identical from a user perspective - you > don't need to worry about whether the document already exists. > > But, there is another, newer form of update, "selective" or "atomic" which > is updating a subset of the fields in an existing document without needing > to re-send all of the other fields of the existing document. > See: > http://wiki.apache.org/solr/**Atomic_Updates<http://wiki.apache.org/solr/Atomic_Updates> > > But... none of this has to do with "indexing" vs. "reindexing"... you need > to be clear what real question you are trying to ask, otherwise we can > keeping following your questions, answering each in detail, bouncing all > over the place without understanding what it is that you are really looking > for. > > More specifically, what exactly is the problem you are trying to solve? > > -- Jack Krupansky > > -----Original Message----- From: Furkan KAMACI > Sent: Thursday, April 04, 2013 2:45 AM > To: solr-user@lucene.apache.org > Subject: Re: Difference Between Indexing and Reindexing > > > Hi Otis, then what is the difference between add and update? And how we > update or add documents into Solr (I see that there is just one update > handler)? > > > 2013/4/4 Otis Gospodnetic <otis.gospodne...@gmail.com> > > I don't recall what Nutch does, so it's hard to tell. >> >> In Solr (Lucene, really), you can: >> * add documents >> * update documents >> * delete documents >> >> Currently, update is really a delete + readd under the hood. It's >> been like that for 13+ years, but this may change: >> https://issues.apache.org/**jira/browse/LUCENE-4258<https://issues.apache.org/jira/browse/LUCENE-4258> >> >> Otis >> -- >> Solr & ElasticSearch Support >> http://sematext.com/ >> >> >> >> >> >> On Wed, Apr 3, 2013 at 9:15 PM, Furkan KAMACI <furkankam...@gmail.com> >> wrote: >> > OK, This could be a so easy question but I want to learn just a bit more >> > technical detail of it. >> > When I use Nutch to send documents to Solr to be indexing there are two >> > parameters: >> > >> > -index and -reindex. >> > >> > What Solr does at each one different from the other one? >> >> >
