If you are using the release which doesn't have this patch https://issues.apache.org/jira/browse/MAPREDUCE-5036, then 8080 port will be used by Node Manager shuffle handler service.
You can change this default port '8080' to some other value using the configuration "mapreduce.shuffle.port" in all Node Mangers yarn-site.xml file.
From: ch huang [mailto:[EMAIL PROTECTED]]
Sent: 11 July 2013 07:46
To: [EMAIL PROTECTED]
Subject: yarn Failed to bind to: 0.0.0.0/0.0.0.0:8080
i have 3 NM, on the box of one of NM ,the 8080 PORT has already ocuppied by tomcat,so i want to change all NM 8080 port to 8090,but problem is
i do not know 8080 port is control by what option in yarn ,anyone can help??