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https://issues.apache.org/jira/browse/SOLR-12533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529958#comment-16529958
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Peter Cseh commented on SOLR-12533:
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We should initialize the metrics later to avoid this race condition.
> Collection collection fails if metrics are called during core creation
> ----------------------------------------------------------------------
>
> Key: SOLR-12533
> URL: https://issues.apache.org/jira/browse/SOLR-12533
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 7.0
> Reporter: Peter Cseh
> Priority: Major
>
> There is a race condition in SorlCore's constructor:
> - the metrics.indexSize call implicitly creates a data/index folder for that
> core
> - if the data/index folder exists, no segments file will be created
> - the searcher won't start up if there are no segments file in the data/index
> folder
> This is probably the root cause for SOLR-2130 and SOLR-2801 as well.
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