gianm commented on code in PR #14121:
URL: https://github.com/apache/druid/pull/14121#discussion_r1176022455


##########
extensions-core/azure-extensions/pom.xml:
##########
@@ -159,7 +159,7 @@
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
-                <version>0.8.4</version>
+                <version>${jacoco.version}</version>

Review Comment:
   IIRC, if the `<version>` is in `<pluginManagement>` in the main pom, then 
the line doesn't need to be present at all here.



##########
docs/configuration/index.md:
##########
@@ -422,6 +422,12 @@ There are several emitters available:
 
 ##### Logging Emitter Module
 
+The use this emitter module, set `druid.emitter=logging`. The Logging emitter 
will use the configured
+`druid.emitter.logging.loggerClass` to emit events. If the `loggerClass` is 
set to `LoggingEmitter` (the default), the

Review Comment:
   > The Logging emitter will use the configured 
`druid.emitter.logging.loggerClass` to emit events. If the `loggerClass` is set 
to `LoggingEmitter` (the default), the events are logged as a single `json` 
object with a Marker…
   
   All the `druid.emitter.logging.loggerClass` does is control the package name 
of the logger (what gets printed for `%c` in the pattern). The new doc line 
here makes it sound like it does more than that. Suggest something like:
   
   > The `logging` emitter uses a log4j2 logger named 
`druid.emitter.logging.loggerClass` to emit events. Each event is logged as a 
single `json` object with a Marker…
   
   Also, from looking at the code, I believe the existing doc is wrong: the 
default is `org.apache.druid.java.util.emitter.core.LoggingEmitter` not 
`LoggingEmitter`.



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