Arpit Agarwal created HDFS-4963:
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Summary: Improve multihoming support in namenode
Key: HDFS-4963
URL: https://issues.apache.org/jira/browse/HDFS-4963
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 1.3.0
Reporter: Arpit Agarwal
Assignee: Arpit Agarwal
HDFS does not work very well on multi-homed machines. A few open Jiras refer to
this:
# HDFS-1379
# HADOOP-8198
There are multiple issues involved here and some of them can be worked around
by using alternate DNS names and configuring {{slave.host.name}} on Datanodes
and task trackers.
However namenode issues cannot be worked around because it does not respect the
{{fs.default.name}} configuration. e.g. {{Namenode#initialize}} performs a
gratuitous reverse DNS lookup to regenerate the hostname. Similar issues exist
elsewhere.
This Jira is being filed to fix some of the more egregious problems. To avoid
affecting existing users a new config setting may be introduced.
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