liujianhui created HDFS-9135:
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Summary: The dfs client will always connect to the old ip which
previous resloved after domainname of namenode change to a new ip
Key: HDFS-9135
URL: https://issues.apache.org/jira/browse/HDFS-9135
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: liujianhui
Priority: Minor
when the namenode from one machine to another machine, while the domainname of
the namenode is not modify, for example both are namenode.org . now
fs.hdfs.impl.disable.cache in conf is false as default, the dfs client will
always connect to the old machine firstly, and then connect to the new machine
with the IOException reponse. this procedure will waste a few seconds.
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