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HDFS-6313. WebHdfs may use the wrong NN when configured for multiple HA NNs. Contributed by Kihwal Lee.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1593475 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Kihwal Lee 2014-05-09 02:01:37 +00:00
parent 87215cb9f6
commit 5323d5e388
4 changed files with 65 additions and 6 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -501,6 +501,9 @@ Release 2.4.1 - UNRELEASED
HDFS-6329. WebHdfs does not work if HA is enabled on NN but logical URI is
not configured. (kihwal)
HDFS-6313. WebHdfs may use the wrong NN when configured for multiple HA NNs
(kihwal)
Release 2.4.0 - 2014-04-07
INCOMPATIBLE CHANGES

14
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java
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@ -100,6 +100,7 @@
import org.apache.hadoop.util.Progressable;
import org.mortbay.util.ajax.JSON;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Charsets;
import com.google.common.collect.Lists;
@ -1112,10 +1113,10 @@ private InetSocketAddress[] resolveNNAddr() throws IOException {
Map<String, Map<String, InetSocketAddress>> addresses = DFSUtil
.getHaNnWebHdfsAddresses(conf, scheme);
for (Map<String, InetSocketAddress> addrs : addresses.values()) {
for (InetSocketAddress addr : addrs.values()) {
ret.add(addr);
}
// Extract the entry corresponding to the logical name.
Map<String, InetSocketAddress> addrs = addresses.get(uri.getHost());
for (InetSocketAddress addr : addrs.values()) {
ret.add(addr);
}
}
@ -1128,4 +1129,9 @@ public String getCanonicalServiceName() {
return tokenServiceName == null ? super.getCanonicalServiceName()
: tokenServiceName.toString();
}
@VisibleForTesting
InetSocketAddress[] getResolvedNNAddr() {
return nnAddrs;
}
}

28
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
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@ -148,16 +148,40 @@ public static void formatNameNode(Configuration conf) throws IOException {
*/
public static Configuration newHAConfiguration(final String logicalName) {
Configuration conf = new Configuration();
conf.set(DFSConfigKeys.DFS_NAMESERVICES, logicalName);
addHAConfiguration(conf, logicalName);
return conf;
}
/**
* Add a new HA configuration.
*/
public static void addHAConfiguration(Configuration conf,
final String logicalName) {
String nsIds = conf.get(DFSConfigKeys.DFS_NAMESERVICES);
if (nsIds == null) {
conf.set(DFSConfigKeys.DFS_NAMESERVICES, logicalName);
} else { // append the nsid
conf.set(DFSConfigKeys.DFS_NAMESERVICES, nsIds + "," + logicalName);
}
conf.set(DFSUtil.addKeySuffixes(DFSConfigKeys.DFS_HA_NAMENODES_KEY_PREFIX,
logicalName), "nn1,nn2");
conf.set(DFSConfigKeys.DFS_CLIENT_FAILOVER_PROXY_PROVIDER_KEY_PREFIX + "" +
"." + logicalName,
ConfiguredFailoverProxyProvider.class.getName());
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, 1);
return conf;
}
public static void setFakeHttpAddresses(Configuration conf,
final String logicalName) {
conf.set(DFSUtil.addKeySuffixes(
DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY,
logicalName, "nn1"), "127.0.0.1:12345");
conf.set(DFSUtil.addKeySuffixes(
DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY,
logicalName, "nn2"), "127.0.0.1:12346");
}
/** class MyFile contains enough information to recreate the contents of
* a single file.
*/

26
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHDFSForHA.java
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@ -156,4 +156,30 @@ public void testFailoverAfterOpen() throws IOException {
}
}
}
@Test
public void testMultipleNamespacesConfigured() throws Exception {
Configuration conf = DFSTestUtil.newHAConfiguration(LOGICAL_NAME);
MiniDFSCluster cluster = null;
WebHdfsFileSystem fs = null;
try {
cluster = new MiniDFSCluster.Builder(conf).nnTopology(topo)
.numDataNodes(1).build();
HATestUtil.setFailoverConfigurations(cluster, conf, LOGICAL_NAME);
cluster.waitActive();
DFSTestUtil.addHAConfiguration(conf, LOGICAL_NAME + "remote");
DFSTestUtil.setFakeHttpAddresses(conf, LOGICAL_NAME + "remote");
fs = (WebHdfsFileSystem)FileSystem.get(WEBHDFS_URI, conf);
Assert.assertEquals(2, fs.getResolvedNNAddr().length);
} finally {
IOUtils.cleanup(null, fs);
if (cluster != null) {
cluster.shutdown();
}
}
}
}