DENG FEI created HADOOP-13949:
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Summary: Hadoop could provide IP instead of hostname to represent
the node, which can reduce the DNS hostname resolution consumption
Key: HADOOP-13949
URL: https://issues.apache.org/jira/browse/HADOOP-13949
Project: Hadoop Common
Issue Type: Improvement
Components: common
Reporter: DENG FEI
Normally,Hadoop use hostname represent the node,such as
datanode,nodemanager,will lookup nameserver at rack resolve or connnect rpc.
May be could provide a chance use ip walk around dns resolution.
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