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https://issues.apache.org/jira/browse/HADOOP-4177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12633778#action_12633778
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Marco Nicosia commented on HADOOP-4177:
---------------------------------------
Although port 8020 may be in the code, it's not explicitly mentioned and/or
overridden in hadoop-defaults.xml:
{code:xml}
<property>
<name>fs.default.name</name>
<value>file:///</value>
</property>
<property>
<name>dfs.datanode.ipc.address</name>
<value>0.0.0.0:50020</value>
<description>
The datanode ipc server address and port.
If the port is 0 then the server will start on a free port.
</description>
</property>
{code}
The quickstart doc uses port 9000 for fs.default.name:
{code:xml}
<property>
<name>fs.default.name</name>
<value>localhost:9000</value>
</property>
{code}
We need to make sure that when we consolidate, we make changes in the code, the
default configs and the forest docs simultaneously.
> Range of ports instead of all over the map
> ------------------------------------------
>
> Key: HADOOP-4177
> URL: https://issues.apache.org/jira/browse/HADOOP-4177
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.18.0
> Reporter: Allen Wittenauer
>
> Change the default ports so they are next to each other rather than scattered
> to make it easier to firewall Hadoop off.
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