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From "Noble Paul (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-7282) Cache config or index schema objects by configset and share them across cores
Date Wed, 30 Nov 2016 04:20:58 GMT

    [ https://issues.apache.org/jira/browse/SOLR-7282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15707484#comment-15707484
] 

Noble Paul commented on SOLR-7282:
----------------------------------

How do we compute the hash w/o downloading the content? Doesn't it mean that we have to fetch
the whole file every time? The only savings that we get, in that case, is the cost of parsing

> 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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