[GitHub] [skywalking-java] wu-sheng commented on a diff in pull request #305: Optimize ConfigInitializer warnning mesaage,fix override and merge de…

[GitBox <gi...@apache.org>]

wu-sheng commented on code in PR #305:
URL: https://github.com/apache/skywalking-java/pull/305#discussion_r965588165


##########
docs/en/setup/service-agent/java-agent/configurations.md:
##########
@@ -114,5 +114,10 @@ This is the properties list supported in `agent/config/agent.config`.
 | `plugin.micronauthttpclient.collect_http_params`                | This config item controls that whether the Micronaut http client plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                                                                                                                                 | SW_PLUGIN_MICRONAUTHTTPCLIENT_COLLECT_HTTP_PARAMS                | `false`                                                                 |
 | `plugin.micronauthttpserver.collect_http_params`                | This config item controls that whether the Micronaut http server plugin should collect the parameters of the request. Also, activate implicitly in the profiled trace.                                                                                                                                                                                                                                                                                                                                                                                 | SW_PLUGIN_MICRONAUTHTTPSERVER_COLLECT_HTTP_PARAMS                | `false`                                                                 |
 
+# How to override default value to blank Collection/Map
+
+* Collection type config such as : `plugin.kafka.topics=a,b,c,d` , In order set the value to blank . just omit the value:` plugin.kafka.topics=` 
+* Map type config such as : `plugin.kafka.producer_config[key]=X` ，In order set the value to blank , just omit the key and value :` plugin.kafka.producer_config[]=`

Review Comment:
   ```suggestion
   # Reset Collection/Map type configurations as empty collection.
   
   * Collection type config, e.g.  using ` plugin.kafka.topics=` 
   to override default `plugin.kafka.topics=a,b,c,d` 
   * Map type config, e.g. using `plugin.kafka.producer_config[]=` to override default `plugin.kafka.producer_config[key]=value`
   ```



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