Package org.apache.hadoop.hdfs.server.namenode.ha

Interface HAProxyFactory<T>

All Known Implementing Classes:

ClientHAProxyFactory

@Private
public interface HAProxyFactory<T>

This interface aims to decouple the proxy creation implementation that used in AbstractNNFailoverProxyProvider. Client side can use ClientProtocol to initialize the proxy while the server side can use NamenodeProtocols

Method Summary

Modifier and Type	Method	Description
T	createProxy(org.apache.hadoop.conf.Configuration conf, InetSocketAddress nnAddr, Class<T> xface, org.apache.hadoop.security.UserGroupInformation ugi, boolean withRetries)
T	createProxy(org.apache.hadoop.conf.Configuration conf, InetSocketAddress nnAddr, Class<T> xface, org.apache.hadoop.security.UserGroupInformation ugi, boolean withRetries, AtomicBoolean fallbackToSimpleAuth)
default void	setAlignmentContext(org.apache.hadoop.ipc.AlignmentContext alignmentContext)	Set the alignment context to be used when creating new proxies using this factory.

Method Details

createProxy

T createProxy(org.apache.hadoop.conf.Configuration conf,
 InetSocketAddress nnAddr,
 Class<T> xface,
 org.apache.hadoop.security.UserGroupInformation ugi,
 boolean withRetries,
 AtomicBoolean fallbackToSimpleAuth)
       throws IOException

Throws:

IOException

createProxy

T createProxy(org.apache.hadoop.conf.Configuration conf,
 InetSocketAddress nnAddr,
 Class<T> xface,
 org.apache.hadoop.security.UserGroupInformation ugi,
 boolean withRetries)
       throws IOException

Throws:

IOException

setAlignmentContext

default void setAlignmentContext(org.apache.hadoop.ipc.AlignmentContext alignmentContext)

Set the alignment context to be used when creating new proxies using this factory. Not all implementations will use this alignment context.