[jira] [Reopened] (SOLR-300) create subclass of SingleInstanceLockFactory which warns loadly in the event of concurrent lock attempts

["Mark Miller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Miller reopened SOLR-300:
------------------------------


Why close this?
                
> 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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