JingGe commented on a change in pull request #17458:
URL: https://github.com/apache/flink/pull/17458#discussion_r731899520



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File path: docs/content/docs/flinkDev/building.md
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@@ -52,11 +52,19 @@ mvn clean install -DskipTests
 
 This instructs [Maven](http://maven.apache.org) (`mvn`) to first remove all 
existing builds (`clean`) and then create a new Flink binary (`install`).
 
-To speed up the build you can skip tests, QA plugins, and JavaDocs:
+To speed up the build you can:
+- skip unit tests, integration tests and use the build-in "fast" and 
"skip-webui-build" maven profile to skip QA, JavaDocs, and frontend plugins.
+- active maven parallel build, e.g. "mvn -T 1C" means 1 thread per cpu core. 
The maven parallel build may have deadlock(issue with the shade plugin). Please 
be aware of that and make sure you can live with it.

Review comment:
       sounds great!




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