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https://issues.apache.org/jira/browse/HDFS-6001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth resolved HDFS-6001.
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Resolution: Not A Problem
Thanks, Jerry. I'm going to go ahead and close this.
I think there are 2 possibilities for getting the information: the one I
already described and also getting the relevant configuration values from a
{{Configuration}} object.
> In HDFS HA setup, FileSystem.getUri returns hdfs://<dfs.nameservices>
> ---------------------------------------------------------------------
>
> Key: HDFS-6001
> URL: https://issues.apache.org/jira/browse/HDFS-6001
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.2.0
> Reporter: Jerry He
> Priority: Minor
>
> When hdfs is set up with HA enable, FileSystem.getUri returns
> hdfs://<the-value-of-dfs.nameservices>
> Here dfs.nameservices is defined when HA is enabled. In documentation:
> {quote}
> dfs.nameservices - the logical name for this new nameserviceChoose a logical
> name for this nameservice, for example "mycluster", and use this logical name
> for the value of this config option. The name you choose is arbitrary. It
> will be used both for configuration and as the authority component of
> absolute HDFS paths in the cluster.
> Note: If you are also using HDFS Federation, this configuration setting
> should also include the list of other nameservices, HA or otherwise, as a
> comma-separated list.
> <property>
> <name>dfs.nameservices</name>
> <value>mycluster</value>
> </property>
> {quote}
> This is probably ok or even intended. But a caller may further process the
> URI, for example, call URI.getHost(). This will return the 'mycluster', which
> is not a valid host anywhere.
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