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https://issues.apache.org/jira/browse/SOLR-300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15551769#comment-15551769
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Alexandre Rafalovitch commented on SOLR-300:
--------------------------------------------
Is this still relevant with simple type being no longer the default? Also, I
thought there was a lot of lock-related work done in 6.x.
> create subclass of SingleInstanceLockFactory which warns loadly in the event
> of concurrent lock attempts
> --------------------------------------------------------------------------------------------------------
>
> Key: SOLR-300
> URL: https://issues.apache.org/jira/browse/SOLR-300
> Project: Solr
> Issue Type: Wish
> Components: update
> Reporter: Hoss Man
> Priority: Minor
>
> as noted by yonik in SOLR-240...
> How about SingleInstanceLockFactory to aid in catching concurrency bugs?
> ...
> or even better, a subclass or other implementation:
> SingleInstanceWarnLockFactory or SingleInstanceCoordinatedLockFactory that
> log a failure if obtain() is called for a lock that is already locked.
> we should create a new subclass like Yonik describes and change
> SolrIndexWriter to use this subclass if/when "single" is specified as the
> lockType.
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