You are viewing a plain text version of this content. The canonical link for it is here.
Posted to solr-user@lucene.apache.org by Jan Høydahl <ja...@cominvent.com> on 2013/10/04 11:41:20 UTC
Re: ALIAS feature, can be used for what?
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 <ya...@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.riveiro@gmail.com (mailto:yago.riveiro@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).
>>>
>>
>>
>>
>
>
Re: ALIAS feature, can be used for what?
Posted by Mark Miller <ma...@gmail.com>.
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 <mi...@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 <uv...@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 <ya...@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.riveiro@gmail.com(mailto:
>> yago.riveiro@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).
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>
Re: ALIAS feature, can be used for what?
Posted by Michael Della Bitta <mi...@appinions.com>.
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 <uv...@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 <ya...@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.riveiro@gmail.com(mailto:
> yago.riveiro@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).
> > >>>
> > >>
> > >>
> > >>
> > >
> > >
> >
>
Re: ALIAS feature, can be used for what?
Posted by Upayavira <uv...@odoko.co.uk>.
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 <ya...@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.riveiro@gmail.com (mailto:yago.riveiro@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).
> >>>
> >>
> >>
> >>
> >
> >
>
Re: ALIAS feature, can be used for what?
Posted by Michael Della Bitta <mi...@appinions.com>.
CREATEALIAS is also used to move an alias.
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 5:41 AM, Jan Høydahl <ja...@cominvent.com> 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 <ya...@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.riveiro@gmail.com(mailto:
> yago.riveiro@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).
> >>>
> >>
> >>
> >>
> >
> >
>
>