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From "Erick Erickson (JIRA)" <>
Subject [jira] [Resolved] (SOLR-12348) Solr 6.6.4 fails to start - Unrecognized VM option 'UseParNewGC'
Date Sat, 12 May 2018 21:33:00 GMT


Erick Erickson resolved SOLR-12348.
    Resolution: Invalid

This is not an appropriate use of Solr's JIRA, the issue tracker is not a support portal.
We try to reserve the JIRA system for code issues rather than usage questions.

Please ask the question here:, see:

When you raise question on the user's list, include pertinent details, including sample data,
queries and responses if possible, along with what you expect to see but don't.

If the consensus there is that there are code issues, we can reopen this JIRA or create a
new one.

And please do not cross post to multiple lists.

> Solr 6.6.4 fails to start - Unrecognized VM option 'UseParNewGC'
> ----------------------------------------------------------------
>                 Key: SOLR-12348
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>         Environment: Computer/System: Mac High Sierra 10.13.3 (17D102)
> Processor: 2.2 GHz Intel Core i7
> Memory: 16 GB 1600 MHz DDR3
>            Reporter:  Charles s
>            Priority: Major
> Installed and started Solr 7.3. But, realized for Drupal site, need to use older 6.x
> Installed Solr 6.6.3, but will not start. message: 
> *Still not seeing Solr listening on 8983 after 180 seconds!
> tail: /Applications/solr-6.6.3/server/logs/solr.log: No such file or directory*
> Same result when using bin/solr start, or using sudo.
> Solr-8983-console.log shows message: ** 
> *Java HotSpot(TM) 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated
in version 9.0 and will likely be removed in a future release.
> Unrecognized VM option 'UseParNewGC'
> Error: Could not create the Java Virtual Machine.
> Error: A fatal exception has occurred. Program will exit.*
> Java -version displays: 
> *java version "10.0.1" 2018-04-17
> Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
> Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)*
> Also tried with Solr 6.6.3, 6.6.0 and 5.0.0 with same failure and log message.
>  ** 

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