HDFS-3414. Balancer does not find NameNode if rpc-address or servicerpc-address are not set in client configs. Contributed by Aaron T. Myers.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1338275 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Aaron Myers 2012-05-14 16:25:17 +00:00
parent f1560d379d
commit 05c5fcfb42
4 changed files with 102 additions and 17 deletions

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@ -658,6 +658,9 @@ Release 2.0.0 - UNRELEASED
HDFS-3026. HA: Handle failure during HA state transition. (atm) HDFS-3026. HA: Handle failure during HA state transition. (atm)
HDFS-3414. Balancer does not find NameNode if rpc-address or
servicerpc-address are not set in client configs. (atm)
BREAKDOWN OF HDFS-1623 SUBTASKS BREAKDOWN OF HDFS-1623 SUBTASKS
HDFS-2179. Add fencing framework and mechanisms for NameNode HA. (todd) HDFS-2179. Add fencing framework and mechanisms for NameNode HA. (todd)

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@ -41,6 +41,7 @@ import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.classification.InterfaceAudience; import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation; import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path; import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol; import org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeID; import org.apache.hadoop.hdfs.protocol.DatanodeID;
@ -608,6 +609,14 @@ public class DFSUtil {
public static Collection<URI> getNameServiceUris(Configuration conf, public static Collection<URI> getNameServiceUris(Configuration conf,
String... keys) { String... keys) {
Set<URI> ret = new HashSet<URI>(); Set<URI> ret = new HashSet<URI>();
// We're passed multiple possible configuration keys for any given NN or HA
// nameservice, and search the config in order of these keys. In order to
// make sure that a later config lookup (e.g. fs.defaultFS) doesn't add a
// URI for a config key for which we've already found a preferred entry, we
// keep track of non-preferred keys here.
Set<URI> nonPreferredUris = new HashSet<URI>();
for (String nsId : getNameServiceIds(conf)) { for (String nsId : getNameServiceIds(conf)) {
if (HAUtil.isHAEnabled(conf, nsId)) { if (HAUtil.isHAEnabled(conf, nsId)) {
// Add the logical URI of the nameservice. // Add the logical URI of the nameservice.
@ -618,24 +627,46 @@ public class DFSUtil {
} }
} else { } else {
// Add the URI corresponding to the address of the NN. // Add the URI corresponding to the address of the NN.
boolean uriFound = false;
for (String key : keys) { for (String key : keys) {
String addr = conf.get(concatSuffixes(key, nsId)); String addr = conf.get(concatSuffixes(key, nsId));
if (addr != null) { if (addr != null) {
ret.add(createUri(HdfsConstants.HDFS_URI_SCHEME, URI uri = createUri(HdfsConstants.HDFS_URI_SCHEME,
NetUtils.createSocketAddr(addr))); NetUtils.createSocketAddr(addr));
break; if (!uriFound) {
uriFound = true;
ret.add(uri);
} else {
nonPreferredUris.add(uri);
}
} }
} }
} }
} }
// Add the generic configuration keys. // Add the generic configuration keys.
boolean uriFound = false;
for (String key : keys) { for (String key : keys) {
String addr = conf.get(key); String addr = conf.get(key);
if (addr != null) { if (addr != null) {
ret.add(createUri("hdfs", NetUtils.createSocketAddr(addr))); URI uri = createUri("hdfs", NetUtils.createSocketAddr(addr));
break; if (!uriFound) {
uriFound = true;
ret.add(uri);
} else {
nonPreferredUris.add(uri);
}
} }
} }
// Add the default URI if it is an HDFS URI.
URI defaultUri = FileSystem.getDefaultUri(conf);
if (defaultUri != null &&
HdfsConstants.HDFS_URI_SCHEME.equals(defaultUri.getScheme()) &&
!nonPreferredUris.contains(defaultUri)) {
ret.add(defaultUri);
}
return ret; return ret;
} }

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@ -1252,6 +1252,13 @@ public class MiniDFSCluster {
return nameNodes[nnIndex].nameNode.getNameNodeAddress().getPort(); return nameNodes[nnIndex].nameNode.getNameNodeAddress().getPort();
} }
/**
* @return the service rpc port used by the NameNode at the given index.
*/
public int getNameNodeServicePort(int nnIndex) {
return nameNodes[nnIndex].nameNode.getServiceRpcAddress().getPort();
}
/** /**
* Shutdown all the nodes in the cluster. * Shutdown all the nodes in the cluster.
*/ */

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@ -533,29 +533,73 @@ public class TestDFSUtil {
public void testGetNNUris() throws Exception { public void testGetNNUris() throws Exception {
HdfsConfiguration conf = new HdfsConfiguration(); HdfsConfiguration conf = new HdfsConfiguration();
final String NS1_NN1_HOST = "ns1-nn1.example.com:8020"; final String NS1_NN1_ADDR = "ns1-nn1.example.com:8020";
final String NS1_NN2_HOST = "ns1-nn1.example.com:8020"; final String NS1_NN2_ADDR = "ns1-nn2.example.com:8020";
final String NS2_NN_HOST = "ns2-nn.example.com:8020"; final String NS2_NN_ADDR = "ns2-nn.example.com:8020";
final String NN_HOST = "nn.example.com:8020"; final String NN1_ADDR = "nn.example.com:8020";
final String NN1_SRVC_ADDR = "nn.example.com:8021";
final String NN2_ADDR = "nn2.example.com:8020";
conf.set(DFS_FEDERATION_NAMESERVICES, "ns1,ns2"); conf.set(DFS_FEDERATION_NAMESERVICES, "ns1,ns2");
conf.set(DFSUtil.addKeySuffixes(DFS_HA_NAMENODES_KEY_PREFIX, "ns1"),"nn1,nn2"); conf.set(DFSUtil.addKeySuffixes(DFS_HA_NAMENODES_KEY_PREFIX, "ns1"),"nn1,nn2");
conf.set(DFSUtil.addKeySuffixes( conf.set(DFSUtil.addKeySuffixes(
DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "nn1"), NS1_NN1_HOST); DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "nn1"), NS1_NN1_ADDR);
conf.set(DFSUtil.addKeySuffixes( conf.set(DFSUtil.addKeySuffixes(
DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "nn2"), NS1_NN2_HOST); DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "nn2"), NS1_NN2_ADDR);
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, "ns2"), conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, "ns2"),
NS2_NN_HOST); NS2_NN_ADDR);
conf.set(DFS_NAMENODE_RPC_ADDRESS_KEY, "hdfs://" + NN_HOST); conf.set(DFS_NAMENODE_RPC_ADDRESS_KEY, "hdfs://" + NN1_ADDR);
Collection<URI> uris = DFSUtil.getNameServiceUris(conf, DFS_NAMENODE_RPC_ADDRESS_KEY, conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "hdfs://" + NN2_ADDR);
DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY);
Collection<URI> uris = DFSUtil.getNameServiceUris(conf,
DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, DFS_NAMENODE_RPC_ADDRESS_KEY);
assertEquals(4, uris.size());
assertTrue(uris.contains(new URI("hdfs://ns1")));
assertTrue(uris.contains(new URI("hdfs://" + NS2_NN_ADDR)));
assertTrue(uris.contains(new URI("hdfs://" + NN1_ADDR)));
assertTrue(uris.contains(new URI("hdfs://" + NN2_ADDR)));
// Make sure that non-HDFS URIs in fs.defaultFS don't get included.
conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY,
"viewfs://vfs-name.example.com");
uris = DFSUtil.getNameServiceUris(conf, DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY,
DFS_NAMENODE_RPC_ADDRESS_KEY);
assertEquals(3, uris.size()); assertEquals(3, uris.size());
assertTrue(uris.contains(new URI("hdfs://ns1"))); assertTrue(uris.contains(new URI("hdfs://ns1")));
assertTrue(uris.contains(new URI("hdfs://" + NS2_NN_HOST))); assertTrue(uris.contains(new URI("hdfs://" + NS2_NN_ADDR)));
assertTrue(uris.contains(new URI("hdfs://" + NN_HOST))); assertTrue(uris.contains(new URI("hdfs://" + NN1_ADDR)));
// Make sure that an HA URI being the default URI doesn't result in multiple
// entries being returned.
conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "hdfs://ns1");
uris = DFSUtil.getNameServiceUris(conf, DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY,
DFS_NAMENODE_RPC_ADDRESS_KEY);
assertEquals(3, uris.size());
assertTrue(uris.contains(new URI("hdfs://ns1")));
assertTrue(uris.contains(new URI("hdfs://" + NS2_NN_ADDR)));
assertTrue(uris.contains(new URI("hdfs://" + NN1_ADDR)));
// Make sure that when a service RPC address is used that is distinct from
// the client RPC address, and that client RPC address is also used as the
// default URI, that the client URI does not end up in the set of URIs
// returned.
conf = new HdfsConfiguration();
conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "hdfs://" + NN1_ADDR);
conf.set(DFS_NAMENODE_RPC_ADDRESS_KEY, NN1_ADDR);
conf.set(DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, NN1_SRVC_ADDR);
uris = DFSUtil.getNameServiceUris(conf, DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY,
DFS_NAMENODE_RPC_ADDRESS_KEY);
assertEquals(1, uris.size());
assertTrue(uris.contains(new URI("hdfs://" + NN1_SRVC_ADDR)));
} }
} }