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java.lang.Objectorg.apache.hadoop.ipc.Client
public class Client
A client for an IPC service. IPC calls take a single Writable
as a
parameter, and return a Writable
as their value. A service runs on
a port and is defined by a parameter class and a value class.
Server
Field Summary | |
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static org.apache.commons.logging.Log |
LOG
|
Constructor Summary | |
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Client(Class<? extends Writable> valueClass,
Configuration conf)
Construct an IPC client with the default SocketFactory |
|
Client(Class<? extends Writable> valueClass,
Configuration conf,
SocketFactory factory)
Construct an IPC client whose values are of the given Writable
class. |
Method Summary | |
---|---|
Writable[] |
call(Writable[] params,
InetSocketAddress[] addresses)
Deprecated. Use call(Writable[], InetSocketAddress[], Class, UserGroupInformation) instead |
Writable[] |
call(Writable[] params,
InetSocketAddress[] addresses,
Class<?> protocol,
UserGroupInformation ticket)
Makes a set of calls in parallel. |
Writable |
call(Writable param,
InetSocketAddress address)
Deprecated. Use call(Writable, InetSocketAddress, Class, UserGroupInformation) instead |
Writable |
call(Writable param,
InetSocketAddress addr,
Class<?> protocol,
UserGroupInformation ticket)
Make a call, passing param , to the IPC server running at
address which is servicing the protocol protocol,
with the ticket credentials, returning the value. |
Writable |
call(Writable param,
InetSocketAddress addr,
UserGroupInformation ticket)
Deprecated. Use call(Writable, InetSocketAddress, Class, UserGroupInformation) instead |
static void |
setPingInterval(Configuration conf,
int pingInterval)
set the ping interval value in configuration |
void |
stop()
Stop all threads related to this client. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final org.apache.commons.logging.Log LOG
Constructor Detail |
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public Client(Class<? extends Writable> valueClass, Configuration conf, SocketFactory factory)
Writable
class.
public Client(Class<? extends Writable> valueClass, Configuration conf)
valueClass
- conf
- Method Detail |
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public static final void setPingInterval(Configuration conf, int pingInterval)
conf
- ConfigurationpingInterval
- the ping intervalpublic void stop()
@Deprecated public Writable call(Writable param, InetSocketAddress address) throws InterruptedException, IOException
call(Writable, InetSocketAddress, Class, UserGroupInformation)
instead
param
, to the IPC server running at
address
, returning the value. Throws exceptions if there are
network problems or if the remote code threw an exception.
InterruptedException
IOException
@Deprecated public Writable call(Writable param, InetSocketAddress addr, UserGroupInformation ticket) throws InterruptedException, IOException
call(Writable, InetSocketAddress, Class, UserGroupInformation)
instead
param
, to the IPC server running at
address
with the ticket
credentials, returning
the value.
Throws exceptions if there are network problems or if the remote code
threw an exception.
InterruptedException
IOException
public Writable call(Writable param, InetSocketAddress addr, Class<?> protocol, UserGroupInformation ticket) throws InterruptedException, IOException
param
, to the IPC server running at
address
which is servicing the protocol
protocol,
with the ticket
credentials, returning the value.
Throws exceptions if there are network problems or if the remote code
threw an exception.
InterruptedException
IOException
@Deprecated public Writable[] call(Writable[] params, InetSocketAddress[] addresses) throws IOException
call(Writable[], InetSocketAddress[], Class, UserGroupInformation)
instead
IOException
public Writable[] call(Writable[] params, InetSocketAddress[] addresses, Class<?> protocol, UserGroupInformation ticket) throws IOException
IOException
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