wu-sheng commented on a change in pull request #5413:
URL: https://github.com/apache/skywalking/pull/5413#discussion_r479779929
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File path: docs/en/setup/service-agent/java-agent/README.md
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@@ -170,6 +170,7 @@ Now, we have the following known optional plugins.
* Plugin of Spring Cloud Gateway 2.1.x in optional plugin folder. Please only
active this plugin when you install agent in Spring Gateway.
spring-cloud-gateway-2.x-plugin and spring-webflux-5.x-plugin are both required.
* Plugin of Spring Transaction in optional plugin folder. The reason of being
optional plugin is, many local span are generated, which also spend more CPU,
memory and network.
* [Plugin of Kotlin
coroutine](agent-optional-plugins/Kotlin-Coroutine-plugin.md) provides the
tracing across coroutines automatically. As it will add local spans to all
across routines scenarios, Please assess the performance impact.
+* Plugin of quartz-scheduler-2.x in optional plugin folder. The reason of
being optional plugin is, many task scheduling system are based on
quartz-scheduler, this will caused duplicate tracing.
Review comment:
```suggestion
* Plugin of quartz-scheduler-2.x in the optional plugin folder. The reason
for being an optional plugin is, many task scheduling systems are based on
quartz-scheduler, this will cause duplicate tracing and link different
sub-tasks as they share the same quartz level trigger, such as ElasticJob.
```
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