[slf4j-user] how to properly activate the jul-to-slf4j bridge

[Shawn Heisey]

On 9/16/2023 3:36 PM, Ceki Gülcü via slf4j-user wrote:
>> I have learned that although Solr does include the jul-to-slf4j
>> jar, this bridge does not get activated just by having the jar in
>> the classpath.  It must be activated either in the code or in the
>> JUL config.
> 
> That is correct.

How do I do this successfully?  Is it enough to install the 
SLF4JBridgeHandler once at program startup?

I had expected that if I had done it correctly, then the Lucene loggers 
would have been propagated to slf4j and then to log4j.  Solr's loggers 
(created directly with slf4j) do appear in log4j.  But the Lucene 
loggers aren't showing up, which means that either my expectation is 
wrong or I didn't activate the bridge properly.

Thanks,
Shawn