Thanks so much, Gora! What do you mean by appending? If you mean adding to an existing index (on reindexing, this would normally mean an update for an existing Solr document ID, and a create for a new Solr document ID), the best way probably is not to delete the index on the master server (what you call machine A). Once the indexing is completed, a commit ensures that new documents show up for any subsequent queries.
When updates are replicated to slave servers, it is supposed that the updates are merged with the existing indexes and readings on them can be done concurrently. If so, the queries must be responded instantly. That's what I mean "appending". Does it happen in Solr? Best, Bing On Sat, Nov 20, 2010 at 1:58 AM, Gora Mohanty <g...@mimirtech.com> wrote: > On Fri, Nov 19, 2010 at 10:53 PM, Bing Li <lbl...@gmail.com> wrote: > > Hi, all, > > > > Since I didn't find that Lucene presents updated indexes to us, may I > > transmit indexes in the following way? > > > > 1) One indexing machine, A, is busy with generating indexes; > > > > 2) After a certain time, the indexing process is terminated; > > > > 3) Then, the new indexes are transmitted to machines which serve users' > > queries; > > Just replied to a similar question in another thread. The best way > is probably to use Solr replication: > http://wiki.apache.org/solr/SolrReplication > > You can set up replication to happen automatically upon commit on the > master server (where the new index was made). As a commit should > have been made when indexing is complete on the master server, this > will then ensure that a new index is replicated on the slave server. > > > 4) It is possible that some index files have the same names. So the > > conflicting files should be renamed; > > Replication will handle this for you. > > > 5) After the transmission is done, the transmitted indexes are removed > from > > A. > > > > 6) After the removal, the indexing process is started again on A. > [...] > > These two items you have to do manually, i.e., delete all documents > on A, and restart the indexing. > > > > And, may I append them to > existing indexes? > > Does the appending affect the querying? > [...] > > What do you mean by appending? If you mean adding to an existing index > (on reindexing, this would normally mean an update for an existing Solr > document ID, and a create for a new Solr document ID), the best way > probably is not to delete the index on the master server (what you call > machine A). Once the indexing is completed, a commit ensures that new > documents show up for any subsequent queries. > > Regards, > Gora >
