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HADOOP-12449. TestDNS and TestNetUtils failing if no network. (stevel)

This commit is contained in:
Steve Loughran 2015-10-13 21:11:31 +01:00
parent 950e8a459e
commit 38f86c0842
3 changed files with 23 additions and 10 deletions
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2
hadoop-common-project/hadoop-common/CHANGES.txt
View File

@ -629,6 +629,8 @@ Release 2.8.0 - UNRELEASED
HADOOP-12284. UserGroupInformation doAs can throw misleading exception
(Aaron Dosset via stevel)
HADOOP-12449. TestDNS and TestNetUtils failing if no network. (stevel)
OPTIMIZATIONS
HADOOP-12051. ProtobufRpcEngine.invoke() should use Exception.toString()

5
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestDNS.java
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@ -25,6 +25,7 @@
import java.net.UnknownHostException;
import java.net.InetAddress;
import javax.naming.CommunicationException;
import javax.naming.NameNotFoundException;
import org.apache.commons.logging.Log;
@ -165,8 +166,8 @@ public void testRDNS() throws Exception {
InetAddress localhost = getLocalIPAddr();
try {
String s = DNS.reverseDns(localhost, null);
LOG.info("Local revers DNS hostname is " + s);
} catch (NameNotFoundException e) {
LOG.info("Local reverse DNS hostname is " + s);
} catch (NameNotFoundException | CommunicationException e) {
if (!localhost.isLinkLocalAddress() || localhost.isLoopbackAddress()) {
//these addresses probably won't work with rDNS anyway, unless someone
//has unusual entries in their DNS server mapping 1.0.0.127 to localhost

26
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestNetUtils.java
View File

@ -615,20 +615,30 @@ public void testCanonicalUriWithNoPortNoDefaultPort() {
* Test for {@link NetUtils#normalizeHostNames}
*/
@Test
public void testNormalizeHostName() {
List<String> hosts = Arrays.asList(new String[] {"127.0.0.1",
"localhost", "1.kanyezone.appspot.com", "UnknownHost123"});
public void testNormalizeHostName() {
String oneHost = "1.kanyezone.appspot.com";
try {
InetAddress.getByName(oneHost);
} catch (UnknownHostException e) {
Assume.assumeTrue("Network not resolving "+ oneHost, false);
}
List<String> hosts = Arrays.asList("127.0.0.1",
"localhost", oneHost, "UnknownHost123");
List<String> normalizedHosts = NetUtils.normalizeHostNames(hosts);
String summary = "original [" + StringUtils.join(hosts, ", ") + "]"
+ " normalized [" + StringUtils.join(normalizedHosts, ", ") + "]";
// when ipaddress is normalized, same address is expected in return
assertEquals(normalizedHosts.get(0), hosts.get(0));
assertEquals(summary, hosts.get(0), normalizedHosts.get(0));
// for normalizing a resolvable hostname, resolved ipaddress is expected in return
assertFalse(normalizedHosts.get(1).equals(hosts.get(1)));
assertEquals(normalizedHosts.get(1), hosts.get(0));
assertFalse("Element 1 equal "+ summary,
normalizedHosts.get(1).equals(hosts.get(1)));
assertEquals(summary, hosts.get(0), normalizedHosts.get(1));
// this address HADOOP-8372: when normalizing a valid resolvable hostname start with numeric,
// its ipaddress is expected to return
assertFalse(normalizedHosts.get(2).equals(hosts.get(2)));
assertFalse("Element 2 equal " + summary,
normalizedHosts.get(2).equals(hosts.get(2)));
// return the same hostname after normalizing a irresolvable hostname.
assertEquals(normalizedHosts.get(3), hosts.get(3));
assertEquals(summary, hosts.get(3), normalizedHosts.get(3));
}
@Test