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HDFS-10544. Balancer doesn't work with IPFailoverProxyProvider. 

(cherry picked from commit 087290e6b1)
This commit is contained in:
Zhe Zhang 2016-07-12 23:18:37 -07:00
parent dc3e077301
commit 5b4e916b3c
2 changed files with 73 additions and 14 deletions
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36
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
View File

@ -719,10 +719,11 @@ static Collection<String> getInternalNameServices(Configuration conf) {
/**
* Get a URI for each internal nameservice. If a nameservice is
* HA-enabled, then the logical URI of the nameservice is returned. If the
* nameservice is not HA-enabled, then a URI corresponding to an RPC address
* of the single NN for that nameservice is returned, preferring the service
* RPC address over the client RPC address.
* HA-enabled, and the configured failover proxy provider supports logical
* URIs, then the logical URI of the nameservice is returned.
* Otherwise, a URI corresponding to an RPC address of the single NN for that
* nameservice is returned, preferring the service RPC address over the
* client RPC address.
*
* @param conf configuration
* @return a collection of all configured NN URIs, preferring service
@ -736,9 +737,10 @@ public static Collection<URI> getInternalNsRpcUris(Configuration conf) {
/**
* Get a URI for each configured nameservice. If a nameservice is
* HA-enabled, then the logical URI of the nameservice is returned. If the
* nameservice is not HA-enabled, then a URI corresponding to the address of
* the single NN for that nameservice is returned.
* HA-enabled, and the configured failover proxy provider supports logical
* URIs, then the logical URI of the nameservice is returned.
* Otherwise, a URI corresponding to the address of the single NN for that
* nameservice is returned.
*
* @param conf configuration
* @param keys configuration keys to try in order to get the URI for non-HA
@ -757,13 +759,27 @@ static Collection<URI> getNameServiceUris(Configuration conf,
Set<URI> nonPreferredUris = new HashSet<URI>();
for (String nsId : nameServices) {
if (HAUtil.isHAEnabled(conf, nsId)) {
// Add the logical URI of the nameservice.
URI nsUri;
try {
ret.add(new URI(HdfsConstants.HDFS_URI_SCHEME + "://" + nsId));
nsUri = new URI(HdfsConstants.HDFS_URI_SCHEME + "://" + nsId);
} catch (URISyntaxException ue) {
throw new IllegalArgumentException(ue);
}
/**
* Determine whether the logical URI of the name service can be resolved
* by the configured failover proxy provider. If not, we should try to
* resolve the URI here
*/
boolean useLogicalUri = false;
try {
useLogicalUri = HAUtil.useLogicalUri(conf, nsUri);
} catch (IOException e){
LOG.warn("Getting exception while trying to determine if nameservice "
+ nsId + " can use logical URI: " + e);
}
if (HAUtil.isHAEnabled(conf, nsId) && useLogicalUri) {
// Add the logical URI of the nameservice.
ret.add(nsUri);
} else {
// Add the URI corresponding to the address of the NN.
boolean uriFound = false;

43
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUtil.java
View File

@ -62,6 +62,7 @@
import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
@ -534,6 +535,10 @@ public void testHANameNodesWithFederation() throws URISyntaxException {
assertEquals(null, DFSUtil.getNamenodeNameServiceId(conf));
assertEquals(null, DFSUtil.getSecondaryNameServiceId(conf));
String proxyProviderKey = HdfsClientConfigKeys.Failover.
PROXY_PROVIDER_KEY_PREFIX + ".ns2";
conf.set(proxyProviderKey, "org.apache.hadoop.hdfs.server.namenode.ha."
+ "ConfiguredFailoverProxyProvider");
Collection<URI> uris = getInternalNameServiceUris(conf, DFS_NAMENODE_RPC_ADDRESS_KEY);
assertEquals(2, uris.size());
assertTrue(uris.contains(new URI("hdfs://ns1")));
@ -633,6 +638,7 @@ private static Collection<URI> getInternalNameServiceUris(Configuration conf,
public void testGetNNUris() throws Exception {
HdfsConfiguration conf = new HdfsConfiguration();
final String NS1_NN_ADDR = "ns1-nn.example.com:8020";
final String NS1_NN1_ADDR = "ns1-nn1.example.com:8020";
final String NS1_NN2_ADDR = "ns1-nn2.example.com:8020";
final String NS2_NN_ADDR = "ns2-nn.example.com:8020";
@ -664,6 +670,9 @@ public void testGetNNUris() throws Exception {
conf.set(DFSUtil.addKeySuffixes(
DFS_NAMENODE_RPC_ADDRESS_KEY, "ns1", "nn2"), NS1_NN2_ADDR);
conf.set(DFSUtil.addKeySuffixes(
DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, "ns1"), NS1_NN_ADDR);
conf.set(DFSUtil.addKeySuffixes(
DFS_NAMENODE_SERVICE_RPC_ADDRESS_KEY, "ns2"), NS2_NN_ADDR);
@ -671,6 +680,40 @@ public void testGetNNUris() throws Exception {
conf.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, "hdfs://" + NN2_ADDR);
/**
* {@link DFSUtil#getInternalNsRpcUris} decides whether to resolve a logical
* URI based on whether the failover proxy provider supports logical URIs.
* We will test both cases.
*
* First configure ns1 to use {@link IPFailoverProxyProvider} which doesn't
* support logical Uris. So {@link DFSUtil#getInternalNsRpcUris} will
* resolve the logical URI of ns1 based on the configured value at
* dfs.namenode.servicerpc-address.ns1, which is {@link NS1_NN_ADDR}
*/
String proxyProviderKey = HdfsClientConfigKeys.Failover.
PROXY_PROVIDER_KEY_PREFIX + ".ns1";
conf.set(proxyProviderKey, "org.apache.hadoop.hdfs.server.namenode.ha."
+ "IPFailoverProxyProvider");
uris = DFSUtil.getInternalNsRpcUris(conf);
assertEquals("Incorrect number of URIs returned", 3, uris.size());
assertTrue("Missing URI for RPC address",
uris.contains(new URI("hdfs://" + NN1_ADDR)));
assertTrue("Missing URI for name service ns2",
uris.contains(new URI(HdfsConstants.HDFS_URI_SCHEME + "://" +
NS1_NN_ADDR)));
assertTrue("Missing URI for name service ns2",
uris.contains(new URI(HdfsConstants.HDFS_URI_SCHEME + "://" +
NS2_NN_ADDR)));
/**
* Second, test ns1 with {@link ConfiguredFailoverProxyProvider} which does
* support logical URIs. So instead of {@link NS1_NN_ADDR}, the logical URI
* of ns1, hdfs://ns1, will be returned.
*/
conf.set(proxyProviderKey, "org.apache.hadoop.hdfs.server.namenode.ha."
+ "ConfiguredFailoverProxyProvider");
uris = DFSUtil.getInternalNsRpcUris(conf);
assertEquals("Incorrect number of URIs returned", 3, uris.size());