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Posted to common-commits@hadoop.apache.org by el...@apache.org on 2012/03/23 04:15:58 UTC
svn commit: r1304175 - in /hadoop/common/branches/branch-1: CHANGES.txt
src/core/org/apache/hadoop/net/DNS.java
Author: eli
Date: Fri Mar 23 03:15:57 2012
New Revision: 1304175
URL: http://svn.apache.org/viewvc?rev=1304175&view=rev
Log:
HADOOP-7806. Support binding to sub-interfaces. Contributed by Harsh J, Eli Collins
Modified:
hadoop/common/branches/branch-1/CHANGES.txt
hadoop/common/branches/branch-1/src/core/org/apache/hadoop/net/DNS.java
Modified: hadoop/common/branches/branch-1/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-1/CHANGES.txt?rev=1304175&r1=1304174&r2=1304175&view=diff
==============================================================================
--- hadoop/common/branches/branch-1/CHANGES.txt (original)
+++ hadoop/common/branches/branch-1/CHANGES.txt Fri Mar 23 03:15:57 2012
@@ -7,6 +7,8 @@ Release 1.1.0 - unreleased
MAPREDUCE-3118. Backport Gridmix and Rumen features to
branch-0.20-security (Ravi Gummadi via amarrk)
+ HADOOP-7806. Support binding to sub-interfaces. (harsh, eli via eli)
+
BUG FIXES
HDFS-2305. Running multiple 2NNs can result in corrupt file system. (atm)
Modified: hadoop/common/branches/branch-1/src/core/org/apache/hadoop/net/DNS.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-1/src/core/org/apache/hadoop/net/DNS.java?rev=1304175&r1=1304174&r2=1304175&view=diff
==============================================================================
--- hadoop/common/branches/branch-1/src/core/org/apache/hadoop/net/DNS.java (original)
+++ hadoop/common/branches/branch-1/src/core/org/apache/hadoop/net/DNS.java Fri Mar 23 03:15:57 2012
@@ -78,11 +78,35 @@ public class DNS {
}
/**
+ * @return NetworkInterface for the given subinterface name (eg eth0:0)
+ * or null if no interface with the given name can be found
+ */
+ private static NetworkInterface getSubinterface(String strInterface)
+ throws SocketException {
+ Enumeration<NetworkInterface> nifs =
+ NetworkInterface.getNetworkInterfaces();
+
+ while (nifs.hasMoreElements()) {
+ Enumeration<NetworkInterface> subNifs =
+ nifs.nextElement().getSubInterfaces();
+
+ while (subNifs.hasMoreElements()) {
+ NetworkInterface nif = subNifs.nextElement();
+ if (nif.getName().equals(strInterface)) {
+ return nif;
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
* Returns all the IPs associated with the provided interface, if any, in
* textual form.
*
* @param strInterface
- * The name of the network interface to query (e.g. eth0)
+ * The name of the network interface or subinterface to query
+ * (eg eth0 or eth0:0) or the string "default"
* @return A string vector of all the IPs associated with the provided
* interface
* @throws UnknownHostException
@@ -97,16 +121,14 @@ public class DNS {
InetAddress.getLocalHost().getHostAddress()
};
}
+ NetworkInterface netIf;
try {
- NetworkInterface netIF = NetworkInterface.getByName(strInterface);
- if (netIF == null) {
- throw new UnknownHostException("Unknown interface " + strInterface);
- } else {
- Vector<String> ips = new Vector<String>();
- Enumeration<InetAddress> e = netIF.getInetAddresses();
- while (e.hasMoreElements())
- ips.add(e.nextElement().getHostAddress());
- return ips.toArray(new String[] {});
+ netIf = NetworkInterface.getByName(strInterface);
+ if (netIf == null) {
+ netIf = getSubinterface(strInterface);
+ if (netIf == null) {
+ throw new UnknownHostException("Unknown interface " + strInterface);
+ }
}
} catch (SocketException e) {
LOG.warn("Unable to get IP for interface " + strInterface, e);
@@ -114,6 +136,11 @@ public class DNS {
InetAddress.getLocalHost().getHostAddress()
};
}
+ Vector<String> ips = new Vector<String>();
+ Enumeration<InetAddress> e = netIf.getInetAddresses();
+ while (e.hasMoreElements())
+ ips.add(e.nextElement().getHostAddress());
+ return ips.toArray(new String[] {});
}
/**
@@ -121,7 +148,8 @@ public class DNS {
* network interface
*
* @param strInterface
- * The name of the network interface to query (e.g. eth0)
+ * The name of the network interface or subinterface to query
+ * (e.g. eth0 or eth0:0) or the string "default"
* @return The IP address in text form
* @throws UnknownHostException
* If one is encountered in querying the default interface
@@ -137,7 +165,8 @@ public class DNS {
* address bound to the specified network interface
*
* @param strInterface
- * The name of the network interface to query (e.g. eth0)
+ * The name of the network interface or subinterface to query
+ * (e.g. eth0 or eth0:0) or the string "default"
* @param nameserver
* The DNS host name
* @return A string vector of all host names associated with the IPs tied to