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https://issues.apache.org/jira/browse/HADOOP-697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi reassigned HADOOP-697:
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Assignee: Raghu Angadi (was: Hairong Kuang)
> Duplicate data node name calculation in Datanode constructor
> ------------------------------------------------------------
>
> Key: HADOOP-697
> URL: https://issues.apache.org/jira/browse/HADOOP-697
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Affects Versions: 0.8.0
> Reporter: Hairong Kuang
> Assigned To: Raghu Angadi
>
> A data node name is calculated twice when a DataNode object is constructed.
> One is computed at line 158 in DataNode.java using the statement:
> InetAddress.getLocalHost().getHostName().
> The value is passed the private DataNode constructor but is never used. The
> name is recomputed at lines 189-192 using the statement:
> DNS.getDefaultHost(
> conf.get("dfs.datanode.dns.interface", "default"),
> conf.get("dfs.datanode.dns.nameserver", "default"))".
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