zentol commented on a change in pull request #12558:
URL: https://github.com/apache/flink/pull/12558#discussion_r438092812
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File path: docs/ops/deployment/docker.md
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@@ -264,10 +268,14 @@ There are several ways in which you can further customize
the Flink image:
* install custom software (e.g. python)
* enable (symlink) optional libraries or plugins from `/opt/flink/opt` into
`/opt/flink/lib` or `/opt/flink/plugins`
-* add other libraries to `/opt/flink/lib` (e.g.
[hadoop](hadoop.html#adding-hadoop-to-lib))
+* add other libraries to `/opt/flink/lib` (e.g. [hadoop](#extend-with-maven))
* add other plugins to `/opt/flink/plugins`
-you can achieve this in several ways:
+All files in the `/opt/flink/lib/` folder are added to the classpath used to
start Flink. It is suitable for libraries such as Hadoop or file systems not
available as plugins.
+
+Files in the `/opt/flink/plugins/` are loaded at runtime by Flink through
separate classloaders to avoid conflicts with classes loaded and used by Flink.
Only jar files which are prepared as [plugins]({{ site.baseurl
}}/ops/plugins.html) can be added here.
Review comment:
use the new link thingie instead
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