lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Tomás Fernández Löbbe (JIRA) <>
Subject [jira] [Commented] (SOLR-11982) Add support for preferReplicaTypes parameter
Date Thu, 22 Feb 2018 19:33:00 GMT


Tomás Fernández Löbbe commented on SOLR-11982:

Thanks [~emaijala], this looks really good. Again, I'm trying to unify the API with the work
done in SOLR-10880. SOLR-10880 attempts to filter the replicas that can be used for resolving
a query using {{shards.filter}}. It feels like what you are doing here is sorting the replicas,
to prefer some over others. How do you feel about using the a parameter like {{shards.sort}},
and making the value something like {{replicaType:PULL,replicaType:TLOG}}? {{local}} could
actually be just a keyword of this new parameter, and someone could do:
{{...&shards.sort=replicaType:PULL,local}} meaning "use replicas of type PULL if available,
otherwise prefer local cores, otherwise any replica}}. In the future, the replica tags, as
defined in SOLR-10880 could also be used for sorting and not only for filtering (i.e. {{...&shards.sort=local,replicaProp:rack1,replicaProp:dc1}}).

If so, we can deprecate {{preferLocalShards}}

> Add support for preferReplicaTypes parameter
> --------------------------------------------
>                 Key: SOLR-11982
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>    Affects Versions: master (8.0), 7.3
>            Reporter: Ere Maijala
>            Priority: Minor
>              Labels: patch-available, patch-with-test
>         Attachments: SOLR-11982-v2.patch, SOLR-11982-v3.patch, SOLR-11982.patch
> It would be nice to have the possibility to easily prefer certain replica types in a
similar fashion to preferLocalShards. I'll be coming up with a patch that allows one to specify
e.g. preferReplicaTypes=PULL,TLOG which would mean that NRT replicas wouldn't be hit with
queries unless they're the only ones available.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message