HDFS-4496. DFSClient: don't create a domain socket unless we need it. Contributed by Colin Patrick McCabe.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-347@1445491 13f79535-47bb-0310-9956-ffa450edef68
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@ -45,3 +45,5 @@ HDFS-4473. Don't create domain socket unless we need it. (Colin Patrick McCabe v
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HDFS-4485. DN should chmod socket path a+w. (Colin Patrick McCabe via atm)
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HDFS-4453. Make a simple doc to describe the usage and design of the shortcircuit read feature. (Colin Patrick McCabe via atm)
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HDFS-4496. DFSClient: don't create a domain socket unless we need it (Colin Patrick McCabe via todd)
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@ -85,6 +85,10 @@ class DomainSocketFactory {
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// If there is no domain socket path configured, we can't use domain
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// sockets.
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if (conf.domainSocketPath.isEmpty()) return null;
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// If we can't do anything with the domain socket, don't create it.
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if (!(conf.domainSocketDataTraffic || conf.shortCircuitLocalReads)) {
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return null;
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}
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// UNIX domain sockets can only be used to talk to local peers
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if (!DFSClient.isLocalAddress(addr)) return null;
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// If the DomainSocket code is not loaded, we can't create
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