Right - update aliases should only map an alias to one collection, but are perfectly valid.
Read aliases can map to multiple collections or just one. There is currently only a create alias command and not an update alias command. I suppose because the impl for create just happened to work for update as well, so I guess I figured why add it explicitly. I figured we could still do it later - and I suppose we probably should. I also intend to add a list alias command: https://issues.apache.org/jira/browse/SOLR-4968 - Mark On Oct 8, 2013, at 11:31 AM, Michael Della Bitta <michael.della.bi...@appinions.com> wrote: > You can index to an alias that points at only one collection. Works fine! > > Michael Della Bitta > > Applications Developer > > o: +1 646 532 3062 | c: +1 917 477 7906 > > appinions inc. > > “The Science of Influence Marketing” > > 18 East 41st Street > > New York, NY 10017 > > t: @appinions <https://twitter.com/Appinions> | g+: > plus.google.com/appinions<https://plus.google.com/u/0/b/112002776285509593336/112002776285509593336/posts> > w: appinions.com <http://www.appinions.com/> > > > On Fri, Oct 4, 2013 at 7:59 AM, Upayavira <u...@odoko.co.uk> wrote: > >> I've used this feature to great effect. I have logs coming in, and I >> create a core for each day. At the end of each day, I create a new core >> for tomorrow, unload any cores over 2 months old, then create a set of >> aliases ("all", "month", "week", "today") pointing to just the cores >> that are needed for that range. Thus, my app can efficiently query the >> bit of the index it is really interested in. >> >> You cannot, as far as I am aware, index directly to an alias. It >> wouldn't know what to do with the content. However, you can create an >> alias over the top of an existing one, and it will replace it. Works >> nicely. >> >> Upayavira >> >> On Fri, Oct 4, 2013, at 10:41 AM, Jan Høydahl wrote: >>> Hi, >>> >>> I have been asked the same question. There are only DELETEALIAS and >>> CREATEALIAS actions available, so is there a way to achieve uninterrupted >>> switch of an alias from one index to another? Are we lacking a MOVEALIAS >>> command? >>> >>> -- >>> Jan Høydahl, search solution architect >>> Cominvent AS - www.cominvent.com >>> >>> 27. sep. 2013 kl. 10:46 skrev Yago Riveiro <yago.rive...@gmail.com>: >>> >>>> I need delete the alias for the old collection before point it to the >> new, right? >>>> >>>> -- >>>> Yago Riveiro >>>> Sent with Sparrow (http://www.sparrowmailapp.com/?sig) >>>> >>>> >>>> On Friday, September 27, 2013 at 2:25 AM, Otis Gospodnetic wrote: >>>> >>>>> Hi, >>>>> >>>>> Imagine you have an index and you need to reindex your data into a new >>>>> index, but don't want to have to reconfigure or restart client apps >>>>> when you want to point them to the new index. This is where aliases >>>>> come in handy. If you created an alias for the first index and made >>>>> your apps hit that alias, then you can just repoint the same alias to >>>>> your new index and avoid having to touch client apps. >>>>> >>>>> No, I don't think you can write to multiple collections through a >> single alias. >>>>> >>>>> Otis >>>>> -- >>>>> Solr & ElasticSearch Support -- http://sematext.com/ >>>>> Performance Monitoring -- http://sematext.com/spm >>>>> >>>>> >>>>> >>>>> On Thu, Sep 26, 2013 at 6:34 AM, yriveiro <yago.rive...@gmail.com(mailto: >> yago.rive...@gmail.com)> wrote: >>>>>> Today I was thinking about the ALIAS feature and the utility on Solr. >>>>>> >>>>>> Can anyone explain me with an example where this feature may be >> useful? >>>>>> >>>>>> It's possible have an ALIAS of multiples collections, if I do a >> write to the >>>>>> alias, Is this write replied to all collections? >>>>>> >>>>>> /Yago >>>>>> >>>>>> >>>>>> >>>>>> ----- >>>>>> Best regards >>>>>> -- >>>>>> View this message in context: >> http://lucene.472066.n3.nabble.com/ALIAS-feature-can-be-used-for-what-tp4092095.html >>>>>> Sent from the Solr - User mailing list archive at Nabble.com ( >> http://Nabble.com). >>>>>> >>>>> >>>>> >>>>> >>>> >>>> >>> >>
