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What is the default Yarn resource manager port. Is it 8032 or 8050 in HDP2.3.4 and above.

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Expert Contributor

Hortonworks documentation says 8050 but yarn-default.xml says 8032. Also when I do netstat on resource manager node, it give 8032 port where resource manager is connecting and not 8050. I have got reference from one of the questions asked in community and it says this is a bug but might be a documentation error and docment team from Hortonworks has confirmed the port is 8032. See the below link and the update provided by Artem Ervits in the end:

https://community.hortonworks.com/questions/11599/how-to-change-resourcemanager-port-on-oozie.html#a...

Could anyone confirm and let me know if its being resolved?

@Artem Ervits @Neeraj Sabharwal @pardeep

1 ACCEPTED SOLUTION

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Master Guru

@Anshul Sisodia

In YARN HA, the property "yarn.resourcemanager.address" is redundant and instead "yarn.resourcemanager.address.X" is the one which is used.

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1.) Ambari UI for YARN, shows only the property - yarn.resourcemanager.address And it uses port 8050 by default.

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2.) In YARN UI, for the yarn configuration, the property is : yarn.resourcemanager.address.X yarn.resourcemanager.address.Y and they are using port 8032 by default.

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Ambari UI does not explicitly shows "yarn.resourcemanager.address.X" or "yarn.resourcemanager.address.Y", rather only shows "yarn.resourcemanager.address".

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In case if the requirement is to use a different port for the YARN HA ( other than 8032 ), then we can add "yarn.resourcemanager.address.X" and "yarn.resourcemanager.address.Y" in Ambari UI for customer yarn configuration.

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Hope this information helps!

Happy Hadooping 🙂

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14 REPLIES 14

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Expert Contributor

Is it a bug that shows port 8050 in Ambari UI but connect to port 8032..?? I still dont understand as why it doesn't connect to 8050 if we have set Yarn.resourcemanager.address to <rmaddress:8050> rather than connecting to 8032.

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@Anshul Sisodia

As Kuldeep pointed out when you have your RM in HA mode, yarn.resourcemanager.address value is not used to bind the port.

Instead it uses port specified in yarn.resourcemanager.address.{rm1,rm2} for respective RMs.

By default the value is 8032. Also Ambari do not set this by default.

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Explorer

Hi in my case, I am seeing connection refused errors and in the url I notice that It says yarn.resourcemanager.address.X/ipaddress:port, my question is why do we have url/Ip_address:port instead of url:port?

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Explorer

2017-03-30 18:17:25,834 [JobControl] WARN org.apache.hadoop.ipc.Client - Failed to connect to server: blah-1-001.blah.blah.blah.blah-blah.com/50.0.0.11:8032: retries get failed due to exceeded maximum allowed retries number: 0 java.net.ConnectException: Connection refused at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)

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New Contributor

Hi,

When submitting a job via Oozie, I am also getting a Connection Refused error, after configuring yarn.resourcemanager.address.X & yarn.resourcemanager.address.Y and using port 8032.

I have RM HA and Name Node HA

For some reason, it is attempting to connect to the standby RM and not the Active RM