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https://issues.apache.org/jira/browse/SOLR-12501?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley resolved SOLR-12501.
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Resolution: Won't Fix
Closing since there's no such thing as a system collection anymore (in 10).
> System Collection should use the correct luceneMatchVersion
> -----------------------------------------------------------
>
> Key: SOLR-12501
> URL: https://issues.apache.org/jira/browse/SOLR-12501
> Project: Solr
> Issue Type: Bug
> Components: blobstore
> Reporter: Varun Thacker
> Priority: Major
>
> Whenever we create the system collection, the solrconfig is hard-coded and
> comes from SystemCollectionSolrConfig.java
> Here we always set the luceneMatchVersion to the latest instead of the lucene
> version that is being released.
> When you go to create the collection we will get this warning the logs
> {code:java}
> WARN - 2018-06-19 14:53:00.400; [c:.system s:shard1 r:core_node2
> x:.system_shard1_replica_n1] org.apache.solr.core.Config; You should not use
> LATEST as luceneMatchVersion property: if you use this setting, and then Solr
> upgrades to a newer release of Lucene, sizable changes may happen. If precise
> back compatibility is important then you should instead explicitly specify an
> actual Lucene version.{code}
> The downside is if a user upgrades Solr then the new docs analysis behaviour
> could differ.
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