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https://issues.apache.org/jira/browse/SOLR-12055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595854#comment-16595854
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Erick Erickson commented on SOLR-12055:
---------------------------------------

In a word, "no". I tried that and the test doesn't pass. I've discovered other 
problems as well, basically I reformulated the three tests into one test that 
fires up a variable number (> 2) watchers and tries to insure that each one 
gets the expected message and... that fails. Watcher 1 gets messages intended 
for watcher 2 and the like.

So I have to figure out some way to positively tie the watchers to the messages 
I guess.

> 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
>         Attachments: SOLR-12055-slh-interim1.patch, 
> SOLR-12055-slh-interim1.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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