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https://issues.apache.org/jira/browse/SOLR-12533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532183#comment-16532183
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ASF subversion and git services commented on SOLR-12533:
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Commit 2e22a12f0e28add0335ea3c56c5236175a76604c in lucene-solr's branch
refs/heads/branch_7x from [~yo...@apache.org]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=2e22a12 ]
SOLR-12533: getting index size shouldn't create directory (metrics race)
> Collection creation 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
> Fix For: 7.5
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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