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Date: Wed, 30 Nov 2016 19:26:59 +0000 (UTC)
From: "Shawn Heisey (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <JIRA.12783761.1426887655000.404534.1480534019534@Atlassian.JIRA>
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Subject: [jira] [Commented] (SOLR-7282) Cache config or index schema objects
 by configset and share them across cores
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archived-at: Wed, 30 Nov 2016 19:28:13 -0000


    [ https://issues.apache.org/jira/browse/SOLR-7282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15709514#comment-15709514 ] 

Shawn Heisey commented on SOLR-7282:
------------------------------------

The way that I was always aware of for changing this in cloud mode is zkcli, using the linkconfig command.  Followed of course by a collection reload.

I wasn't even really aware of MODIFYCOLLECTION until just now ... the docs do say that you can update collection.configName.  SOLR-5132 (which implemented MODIFYCOLLECTION) says that the intent was to automatcially a reload in the event the configname was modified.  I don't know if the automatic reload was implemented.

https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-modifycoll


> Cache config or index schema objects by configset and share them across cores
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-7282
>                 URL: https://issues.apache.org/jira/browse/SOLR-7282
>             Project: Solr
>          Issue Type: Sub-task
>          Components: SolrCloud
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Noble Paul
>             Fix For: 5.2, 6.0
>
>         Attachments: SOLR-7282.patch
>
>
> Sharing schema and config objects has been known to improve startup performance when a large number of cores are on the same box (See http://wiki.apache.org/solr/LotsOfCores).Damien also saw improvements to cluster startup speed upon caching the index schema in SOLR-7191.
> Now that SolrCloud configuration is based on config sets in ZK, we should explore how we can minimize config/schema parsing for each core in a way that is compatible with the recent/planned changes in the config and schema APIs.


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