DFSClient should cache whether addrs are non-local when short-circuiting is
enabled
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Key: HDFS-2653
URL: https://issues.apache.org/jira/browse/HDFS-2653
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 0.23.1, 1.0.0
Reporter: Eli Collins
Assignee: Eli Collins
Something Todd mentioned to me off-line.. currently DFSClient doesn't cache the
fact that non-local reads are non-local, so if short-circuiting is enabled
every time we create a block reader we'll go through the isLocalAddress code
path. We should cache the fact that an addr is non-local as well.
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