[ 
https://issues.apache.org/jira/browse/SOLR-12055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16776345#comment-16776345
 ] 

ASF subversion and git services commented on SOLR-12055:
--------------------------------------------------------

Commit a108b4f730c5404ec7f798fb9d01da1ff0587070 in lucene-solr's branch 
refs/heads/branch_8x from erick
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=a108b4f ]

SOLR-13268: Clean up any test failures resulting from SOLR-12055 (async 
logging). Kevin's upgrades

(cherry picked from commit fe5a96a)


> Enable async logging by default
> -------------------------------
>
>                 Key: SOLR-12055
>                 URL: https://issues.apache.org/jira/browse/SOLR-12055
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: logging
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>            Priority: Minor
>             Fix For: master (9.0), 8.1
>
>         Attachments: SOLR-12055-rollback.patch, 
> SOLR-12055-slh-interim1.patch, SOLR-12055-slh-interim1.patch, 
> SOLR-12055.patch, SOLR-12055.patch, SOLR-12055.patch, SOLR-12055.patch, 
> SOLR-12055.patch
>
>
> When SOLR-7887 is done, switching to async logging will be a simple change to 
> the config files for log4j2. This will reduce contention and increase 
> throughput generally and logging in particular.
> There's a discussion of the pros/cons here: 
> https://logging.apache.org/log4j/2.0/manual/async.html
> An alternative is to put a note in the Ref Guide about how to enable async 
> logging.
> I guess even if we enable async by default the ref guide still needs a note 
> about how to _disable_ it.....



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