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https://issues.apache.org/jira/browse/SOLR-12002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cassandra Targett updated SOLR-12002:
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Issue Type: Improvement (was: Bug)
Summary: Allow DocValue type changes without reindex (was: DocValue
type changes misbehave without Solr restart)
> Allow DocValue type changes without reindex
> -------------------------------------------
>
> Key: SOLR-12002
> URL: https://issues.apache.org/jira/browse/SOLR-12002
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 6.6.2
> Reporter: Marius Ghita
> Priority: Major
>
> I've made a change to our Solr schema where an existing field was changed and
> docValues="true" was added. Only doing a core reload, during reindexing (with
> the clean flag, in dataimporter) the message "Cannot change DocValues type
> from SORTED_SET to SORTED for field companyType" showed up in the logs, but
> not for all documents.
>
> Issuing a Solr restart and then reindexing fixed the issue. Under the
> assumption that core reload should handle any schema changes without issue, I
> think that this behaviour can be considered a bug.
>
> Note that I'm using the classical schema configuration (disabled managed
> schema), maybe managed schema exhibits the same behaviour but that's untested
> on my end.
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