本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.ha.WrappedFailoverProxyProvider类的典型用法代码示例。如果您正苦于以下问题：Java WrappedFailoverProxyProvider类的具体用法？Java WrappedFailoverProxyProvider怎么用？Java WrappedFailoverProxyProvider使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
WrappedFailoverProxyProvider类属于org.apache.hadoop.hdfs.server.namenode.ha包，在下文中一共展示了WrappedFailoverProxyProvider类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: createFailoverProxyProvider
import org.apache.hadoop.hdfs.server.namenode.ha.WrappedFailoverProxyProvider; //导入依赖的package包/类
/** Creates the Failover proxy provider instance*/
@VisibleForTesting
public static <T> AbstractNNFailoverProxyProvider<T> createFailoverProxyProvider(
Configuration conf, URI nameNodeUri, Class<T> xface, boolean checkPort,
AtomicBoolean fallbackToSimpleAuth) throws IOException {
Class<FailoverProxyProvider<T>> failoverProxyProviderClass = null;
AbstractNNFailoverProxyProvider<T> providerNN;
try {
// Obtain the class of the proxy provider
failoverProxyProviderClass = getFailoverProxyProviderClass(conf,
nameNodeUri);
if (failoverProxyProviderClass == null) {
return null;
}
// Create a proxy provider instance.
Constructor<FailoverProxyProvider<T>> ctor = failoverProxyProviderClass
.getConstructor(Configuration.class, URI.class, Class.class);
FailoverProxyProvider<T> provider = ctor.newInstance(conf, nameNodeUri,
xface);
// If the proxy provider is of an old implementation, wrap it.
if (!(provider instanceof AbstractNNFailoverProxyProvider)) {
providerNN = new WrappedFailoverProxyProvider<>(provider);
} else {
providerNN = (AbstractNNFailoverProxyProvider<T>)provider;
}
} catch (Exception e) {
final String message = "Couldn't create proxy provider " +
failoverProxyProviderClass;
LOG.debug(message, e);
if (e.getCause() instanceof IOException) {
throw (IOException) e.getCause();
} else {
throw new IOException(message, e);
}
}
// Check the port in the URI, if it is logical.
if (checkPort && providerNN.useLogicalURI()) {
int port = nameNodeUri.getPort();
if (port > 0 &&
port != HdfsClientConfigKeys.DFS_NAMENODE_RPC_PORT_DEFAULT) {
// Throwing here without any cleanup is fine since we have not
// actually created the underlying proxies yet.
throw new IOException("Port " + port + " specified in URI "
+ nameNodeUri + " but host '" + nameNodeUri.getHost()
+ "' is a logical (HA) namenode"
+ " and does not use port information.");
}
}
providerNN.setFallbackToSimpleAuth(fallbackToSimpleAuth);
return providerNN;
}
示例2: createFailoverProxyProvider
import org.apache.hadoop.hdfs.server.namenode.ha.WrappedFailoverProxyProvider; //导入依赖的package包/类
/** Creates the Failover proxy provider instance*/
@VisibleForTesting
public static <T> AbstractNNFailoverProxyProvider<T> createFailoverProxyProvider(
Configuration conf, URI nameNodeUri, Class<T> xface, boolean checkPort,
AtomicBoolean fallbackToSimpleAuth) throws IOException {
Class<FailoverProxyProvider<T>> failoverProxyProviderClass = null;
AbstractNNFailoverProxyProvider<T> providerNN;
Preconditions.checkArgument(
xface.isAssignableFrom(NamenodeProtocols.class),
"Interface %s is not a NameNode protocol", xface);
try {
// Obtain the class of the proxy provider
failoverProxyProviderClass = getFailoverProxyProviderClass(conf,
nameNodeUri);
if (failoverProxyProviderClass == null) {
return null;
}
// Create a proxy provider instance.
Constructor<FailoverProxyProvider<T>> ctor = failoverProxyProviderClass
.getConstructor(Configuration.class, URI.class, Class.class);
FailoverProxyProvider<T> provider = ctor.newInstance(conf, nameNodeUri,
xface);
// If the proxy provider is of an old implementation, wrap it.
if (!(provider instanceof AbstractNNFailoverProxyProvider)) {
providerNN = new WrappedFailoverProxyProvider<T>(provider);
} else {
providerNN = (AbstractNNFailoverProxyProvider<T>)provider;
}
} catch (Exception e) {
String message = "Couldn't create proxy provider " + failoverProxyProviderClass;
if (LOG.isDebugEnabled()) {
LOG.debug(message, e);
}
if (e.getCause() instanceof IOException) {
throw (IOException) e.getCause();
} else {
throw new IOException(message, e);
}
}
// Check the port in the URI, if it is logical.
if (checkPort && providerNN.useLogicalURI()) {
int port = nameNodeUri.getPort();
if (port > 0 && port != NameNode.DEFAULT_PORT) {
// Throwing here without any cleanup is fine since we have not
// actually created the underlying proxies yet.
throw new IOException("Port " + port + " specified in URI "
+ nameNodeUri + " but host '" + nameNodeUri.getHost()
+ "' is a logical (HA) namenode"
+ " and does not use port information.");
}
}
providerNN.setFallbackToSimpleAuth(fallbackToSimpleAuth);
return providerNN;
}