What is the default Namenode port of HDFS Is it 8020 or 9000 or 50070

Question

I am following an article where it is mentioned that namenode runs on 50070 and I set up my hadoop single node cluster accordingly and it's running fine.

But while searching more on the internet, I have come across few websites mentioning name node address as :

hdfs://localhost:9000/
or

hdfs://localhost:8020
What exactly is the correct port number of namenode?

Answer 1

The default address of namenode web UI is http://localhost:50070/. You can open this address in your browser and check the namenode information.

The default address of namenode server is hdfs://localhost:8020/. You can connect to it to access HDFS by HDFS api.

For your reference please check the following links: link: https://blog.cloudera.com/blog/2009/08/hadoop-default-ports-quick-reference/

https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.4/bk_reference/content/hdfs-ports.html

Hope this will clear your doubt.

Answer 2

These is the list of default ports:

Daemon                   Default Port  Configuration Parameter
-----------------------  ------------ ----------------------------------
Namenode                 50070        dfs.http.address
Datanodes                50075        dfs.datanode.http.address
Secondarynamenode        50090        dfs.secondary.http.address
Backup/Checkpoint node?  50105        dfs.backup.http.address
Jobracker                50030        mapred.job.tracker.http.address
Tasktrackers             50060        mapred.task.tracker.http.address

Answer 3

8020 and 9000 are IPC ports for namenode. The default port for namenode UI is 50070.

Answer 4

9000 is the default service port and not for Web UI. For web UI you have to use 50070

Answer 5

Daemon Namenode

Default Port 50070

Configuration Parameter dfs.http.address

Source: ​

https://blog.cloudera.com/blog/2009/08/hadoop-default-ports-quick-reference/

Answer 6

Here you will find a list of all default ports: http://kontext.tech/docs/DataAndBusinessIntelligence/p/default-ports-used-by-hadoop-services-hdfs-mapreduce-yarn

Answer 7

Default non-web-UI port is 9000. Default web UI port 50070

Answer 8

The default is 50070 but you can change it using the dfs.http.address property

Answer 9

You can change the default port from thr hdfs-default.xml file under dfs.http.address property

Answer 10

To find out the configurations of namenode, you can run this command:

hdfs getconf -namenodes

By this you dont have to worry about what your port is. You can find out like this.

Answer 11

8020/9000 hadoop namenode metadata port number. or you can call rpc/ipc port number. these ports used for internal communication

Comments

What do you mean by "internal communication"?

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What is the default Namenode port of HDFS  Is it 8020 or 9000 or 50070  | Edureka Community
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