HADOOP-7776 Make the Ipc-Header in a RPC-Payload an explicit header (sanjay)
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1197885 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sanjay Radia
parent
db13c99940
commit
072bdd85d1
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@ -55,6 +55,8 @@ Trunk (unreleased changes)
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HADOOP-7792. Add verifyToken method to AbstractDelegationTokenSecretManager.
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(jitendra)
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HADOOP-7776 Make the Ipc-Header in a RPC-Payload an explicit header (sanjay)
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BUGS
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HADOOP-7606. Upgrade Jackson to version 1.7.1 to match the version required
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@ -48,6 +48,7 @@ import org.apache.commons.logging.*;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.ipc.RpcPayloadHeader.*;
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import org.apache.hadoop.io.IOUtils;
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import org.apache.hadoop.io.Text;
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import org.apache.hadoop.io.Writable;
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@ -152,16 +153,20 @@ public class Client {
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return refCount==0;
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}
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/** A call waiting for a value. */
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/**
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* Class that represents an RPC call
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*/
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private class Call {
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int id; // call id
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Writable param; // parameter
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Writable value; // value, null if error
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IOException error; // exception, null if value
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final int id; // call id
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final Writable rpcRequest; // the serialized rpc request - RpcPayload
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Writable rpcResponse; // null if rpc has error
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IOException error; // exception, null if success
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final RpcKind rpcKind; // Rpc EngineKind
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boolean done; // true when call is done
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protected Call(Writable param) {
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this.param = param;
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protected Call(RpcKind rpcKind, Writable param) {
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this.rpcKind = rpcKind;
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this.rpcRequest = param;
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synchronized (Client.this) {
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this.id = counter++;
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}
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@ -187,15 +192,15 @@ public class Client {
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/** Set the return value when there is no error.
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* Notify the caller the call is done.
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*
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* @param value return value of the call.
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* @param rpcResponse return value of the rpc call.
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*/
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public synchronized void setValue(Writable value) {
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this.value = value;
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public synchronized void setRpcResponse(Writable rpcResponse) {
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this.rpcResponse = rpcResponse;
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callComplete();
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}
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public synchronized Writable getValue() {
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return value;
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public synchronized Writable getRpcResult() {
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return rpcResponse;
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}
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}
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@ -727,6 +732,7 @@ public class Client {
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}
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}
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@SuppressWarnings("unused")
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public InetSocketAddress getRemoteAddress() {
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return server;
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}
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@ -787,8 +793,10 @@ public class Client {
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//for serializing the
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//data to be written
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d = new DataOutputBuffer();
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d.writeInt(call.id);
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call.param.write(d);
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RpcPayloadHeader header = new RpcPayloadHeader(
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call.rpcKind, RpcPayloadOperation.RPC_FINAL_PAYLOAD, call.id);
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header.write(d);
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call.rpcRequest.write(d);
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byte[] data = d.getData();
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int dataLength = d.getLength();
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out.writeInt(dataLength); //first put the data length
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@ -825,7 +833,7 @@ public class Client {
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if (state == Status.SUCCESS.state) {
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Writable value = ReflectionUtils.newInstance(valueClass, conf);
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value.readFields(in); // read value
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call.setValue(value);
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call.setRpcResponse(value);
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calls.remove(id);
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} else if (state == Status.ERROR.state) {
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call.setException(new RemoteException(WritableUtils.readString(in),
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@ -909,7 +917,7 @@ public class Client {
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private int index;
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public ParallelCall(Writable param, ParallelResults results, int index) {
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super(param);
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super(RpcKind.RPC_WRITABLE, param);
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this.results = results;
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this.index = index;
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}
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@ -933,7 +941,7 @@ public class Client {
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/** Collect a result. */
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public synchronized void callComplete(ParallelCall call) {
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values[call.index] = call.getValue(); // store the value
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values[call.index] = call.getRpcResult(); // store the value
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count++; // count it
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if (count == size) // if all values are in
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notify(); // then notify waiting caller
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@ -993,15 +1001,23 @@ public class Client {
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}
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}
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/**
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* Same as {@link #call(RpcKind, Writable, ConnectionId)} for Writable
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*/
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public Writable call(Writable param, InetSocketAddress address)
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throws InterruptedException, IOException {
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return call(RpcKind.RPC_WRITABLE, param, address);
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}
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/** Make a call, passing <code>param</code>, to the IPC server running at
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* <code>address</code>, returning the value. Throws exceptions if there are
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* network problems or if the remote code threw an exception.
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* @deprecated Use {@link #call(Writable, ConnectionId)} instead
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* @deprecated Use {@link #call(RpcKind, Writable, ConnectionId)} instead
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*/
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@Deprecated
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public Writable call(Writable param, InetSocketAddress address)
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public Writable call(RpcKind rpcKind, Writable param, InetSocketAddress address)
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throws InterruptedException, IOException {
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return call(param, address, null);
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return call(rpcKind, param, address, null);
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}
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/** Make a call, passing <code>param</code>, to the IPC server running at
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@ -1009,15 +1025,15 @@ public class Client {
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* the value.
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* Throws exceptions if there are network problems or if the remote code
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* threw an exception.
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* @deprecated Use {@link #call(Writable, ConnectionId)} instead
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* @deprecated Use {@link #call(RpcKind, Writable, ConnectionId)} instead
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*/
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@Deprecated
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public Writable call(Writable param, InetSocketAddress addr,
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public Writable call(RpcKind rpcKind, Writable param, InetSocketAddress addr,
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UserGroupInformation ticket)
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throws InterruptedException, IOException {
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ConnectionId remoteId = ConnectionId.getConnectionId(addr, null, ticket, 0,
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conf);
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return call(param, remoteId);
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return call(rpcKind, param, remoteId);
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}
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/** Make a call, passing <code>param</code>, to the IPC server running at
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@ -1026,16 +1042,31 @@ public class Client {
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* timeout, returning the value.
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* Throws exceptions if there are network problems or if the remote code
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* threw an exception.
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* @deprecated Use {@link #call(Writable, ConnectionId)} instead
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* @deprecated Use {@link #call(RpcKind, Writable, ConnectionId)} instead
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*/
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@Deprecated
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public Writable call(Writable param, InetSocketAddress addr,
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public Writable call(RpcKind rpcKind, Writable param, InetSocketAddress addr,
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Class<?> protocol, UserGroupInformation ticket,
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int rpcTimeout)
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throws InterruptedException, IOException {
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ConnectionId remoteId = ConnectionId.getConnectionId(addr, protocol,
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ticket, rpcTimeout, conf);
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return call(param, remoteId);
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return call(rpcKind, param, remoteId);
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}
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/**
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* Same as {@link #call(RpcKind, Writable, InetSocketAddress,
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* Class, UserGroupInformation, int, Configuration)}
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* except that rpcKind is writable.
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*/
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public Writable call(Writable param, InetSocketAddress addr,
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Class<?> protocol, UserGroupInformation ticket,
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int rpcTimeout, Configuration conf)
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throws InterruptedException, IOException {
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ConnectionId remoteId = ConnectionId.getConnectionId(addr, protocol,
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ticket, rpcTimeout, conf);
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return call(RpcKind.RPC_WRITABLE, param, remoteId);
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}
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/**
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@ -1046,22 +1077,31 @@ public class Client {
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* value. Throws exceptions if there are network problems or if the remote
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* code threw an exception.
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*/
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public Writable call(Writable param, InetSocketAddress addr,
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public Writable call(RpcKind rpcKind, Writable param, InetSocketAddress addr,
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Class<?> protocol, UserGroupInformation ticket,
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int rpcTimeout, Configuration conf)
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throws InterruptedException, IOException {
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ConnectionId remoteId = ConnectionId.getConnectionId(addr, protocol,
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ticket, rpcTimeout, conf);
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return call(param, remoteId);
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return call(rpcKind, param, remoteId);
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}
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/**
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* Same as {link {@link #call(RpcKind, Writable, ConnectionId)}
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* except the rpcKind is RPC_WRITABLE
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*/
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public Writable call(Writable param, ConnectionId remoteId)
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throws InterruptedException, IOException {
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return call(RpcKind.RPC_WRITABLE, param, remoteId);
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}
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/** Make a call, passing <code>param</code>, to the IPC server defined by
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* <code>remoteId</code>, returning the value.
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* Throws exceptions if there are network problems or if the remote code
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* threw an exception. */
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public Writable call(Writable param, ConnectionId remoteId)
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public Writable call(RpcKind rpcKind, Writable param, ConnectionId remoteId)
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throws InterruptedException, IOException {
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Call call = new Call(param);
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Call call = new Call(rpcKind, param);
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Connection connection = getConnection(remoteId, call);
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connection.sendParam(call); // send the parameter
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boolean interrupted = false;
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@ -1093,7 +1133,7 @@ public class Client {
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call.error);
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}
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} else {
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return call.value;
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return call.rpcResponse;
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}
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}
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}
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@ -37,6 +37,7 @@ import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.io.Writable;
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import org.apache.hadoop.ipc.RpcPayloadHeader.RpcKind;
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import org.apache.hadoop.ipc.protobuf.HadoopRpcProtos.HadoopRpcExceptionProto;
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import org.apache.hadoop.ipc.protobuf.HadoopRpcProtos.HadoopRpcRequestProto;
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import org.apache.hadoop.ipc.protobuf.HadoopRpcProtos.HadoopRpcResponseProto;
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@ -139,7 +140,7 @@ public class ProtobufRpcEngine implements RpcEngine {
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HadoopRpcRequestProto rpcRequest = constructRpcRequest(method, args);
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RpcResponseWritable val = null;
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try {
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val = (RpcResponseWritable) client.call(
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val = (RpcResponseWritable) client.call(RpcKind.RPC_PROTOCOL_BUFFER,
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new RpcRequestWritable(rpcRequest), remoteId);
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} catch (Exception e) {
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RpcClientException ce = new RpcClientException("Client exception", e);
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@ -0,0 +1,118 @@
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package org.apache.hadoop.ipc;
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import java.io.DataInput;
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import java.io.DataOutput;
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import java.io.IOException;
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import org.apache.hadoop.io.Writable;
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/**
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* This is the rpc payload header. It is sent with every rpc call
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* <pre>
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* The format of RPC call is as follows:
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* +---------------------------------------------------+
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* | Rpc length in bytes (header + payload length) |
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* +---------------------------------------------------+
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* | Rpc Header | Rpc Payload |
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* +---------------------------------------------------+
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*
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* The format of Rpc Header is:
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* +----------------------------------+
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* | RpcKind (1 bytes) |
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* +----------------------------------+
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* | RpcPayloadOperation (1 bytes) |
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* +----------------------------------+
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* | Call ID (4 bytes) |
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* +----------------------------------+
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*
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* {@link RpcKind} determines the type of serialization used for Rpc Payload.
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* </pre>
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* <p>
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* <b>Note this header does NOT have its own version number,
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* it used the version number from the connection header. </b>
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*/
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public class RpcPayloadHeader implements Writable {
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public enum RpcPayloadOperation {
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RPC_FINAL_PAYLOAD ((short)1),
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RPC_CONTINUATION_PAYLOAD ((short)2), // not implemented yet
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RPC_CLOSE_CONNECTION ((short)3); // close the rpc connection
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private final short code;
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private static final short FIRST_INDEX = RPC_FINAL_PAYLOAD.code;
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RpcPayloadOperation(short val) {
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this.code = val;
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}
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public void write(DataOutput out) throws IOException {
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out.writeByte(code);
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}
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static RpcPayloadOperation readFields(DataInput in) throws IOException {
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short inValue = in.readByte();
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return RpcPayloadOperation.values()[inValue - FIRST_INDEX];
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}
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}
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public enum RpcKind {
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RPC_BUILTIN ((short ) 1), // Used for built in calls
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RPC_WRITABLE ((short ) 2),
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RPC_PROTOCOL_BUFFER ((short)3),
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RPC_AVRO ((short)4);
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private final short value;
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private static final short FIRST_INDEX = RPC_BUILTIN.value;
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RpcKind(short val) {
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this.value = val;
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}
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public void write(DataOutput out) throws IOException {
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out.writeByte(value);
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}
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static RpcKind readFields(DataInput in) throws IOException {
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short inValue = in.readByte();
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return RpcKind.values()[inValue - FIRST_INDEX];
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}
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}
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private RpcKind kind;
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private RpcPayloadOperation operation;
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private int callId;
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public RpcPayloadHeader() {
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kind = RpcKind.RPC_WRITABLE;
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operation = RpcPayloadOperation.RPC_CLOSE_CONNECTION;
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}
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public RpcPayloadHeader(RpcKind kind, RpcPayloadOperation op, int callId) {
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this.kind = kind;
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this.operation = op;
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this.callId = callId;
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}
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int getCallId() {
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return callId;
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}
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RpcKind getkind() {
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return kind;
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}
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RpcPayloadOperation getOperation() {
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return operation;
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}
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@Override
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public void write(DataOutput out) throws IOException {
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kind.write(out);
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operation.write(out);
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out.writeInt(callId);
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}
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@Override
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public void readFields(DataInput in) throws IOException {
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kind = RpcKind.readFields(in);
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operation = RpcPayloadOperation.readFields(in);
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this.callId = in.readInt();
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}
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}
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@ -61,11 +61,13 @@ import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.CommonConfigurationKeys;
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import org.apache.hadoop.ipc.RpcPayloadHeader.*;
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import org.apache.hadoop.io.BytesWritable;
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import org.apache.hadoop.io.IntWritable;
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import org.apache.hadoop.io.Writable;
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import org.apache.hadoop.io.WritableUtils;
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import org.apache.hadoop.ipc.RPC.VersionMismatch;
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import org.apache.hadoop.ipc.RpcPayloadHeader.RpcPayloadOperation;
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import org.apache.hadoop.ipc.metrics.RpcDetailedMetrics;
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import org.apache.hadoop.ipc.metrics.RpcMetrics;
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import org.apache.hadoop.net.NetUtils;
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@ -124,7 +126,8 @@ public abstract class Server {
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// 4 : Introduced SASL security layer
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// 5 : Introduced use of {@link ArrayPrimitiveWritable$Internal}
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// in ObjectWritable to efficiently transmit arrays of primitives
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public static final byte CURRENT_VERSION = 5;
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// 6 : Made RPC payload header explicit
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public static final byte CURRENT_VERSION = 6;
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/**
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* Initial and max size of response buffer
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@ -277,28 +280,33 @@ public abstract class Server {
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/** A call queued for handling. */
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private static class Call {
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private int id; // the client's call id
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private Writable param; // the parameter passed
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private Connection connection; // connection to client
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private long timestamp; // the time received when response is null
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// the time served when response is not null
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private ByteBuffer response; // the response for this call
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private final int callId; // the client's call id
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private final Writable rpcRequest; // Serialized Rpc request from client
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private final Connection connection; // connection to client
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private long timestamp; // time received when response is null
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// time served when response is not null
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private ByteBuffer rpcResponse; // the response for this call
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private final RpcKind rpcKind;
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public Call(int id, Writable param, Connection connection) {
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this.id = id;
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this.param = param;
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this( id, param, connection, RpcKind.RPC_BUILTIN );
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}
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public Call(int id, Writable param, Connection connection, RpcKind kind) {
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this.callId = id;
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this.rpcRequest = param;
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this.connection = connection;
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this.timestamp = System.currentTimeMillis();
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this.response = null;
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this.rpcResponse = null;
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this.rpcKind = kind;
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}
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@Override
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public String toString() {
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return param.toString() + " from " + connection.toString();
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return rpcRequest.toString() + " from " + connection.toString();
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}
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public void setResponse(ByteBuffer response) {
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this.response = response;
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this.rpcResponse = response;
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}
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}
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@ -795,17 +803,17 @@ public abstract class Server {
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call = responseQueue.removeFirst();
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SocketChannel channel = call.connection.channel;
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if (LOG.isDebugEnabled()) {
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LOG.debug(getName() + ": responding to #" + call.id + " from " +
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LOG.debug(getName() + ": responding to #" + call.callId + " from " +
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call.connection);
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||||
}
|
||||
//
|
||||
// Send as much data as we can in the non-blocking fashion
|
||||
//
|
||||
int numBytes = channelWrite(channel, call.response);
|
||||
int numBytes = channelWrite(channel, call.rpcResponse);
|
||||
if (numBytes < 0) {
|
||||
return true;
|
||||
}
|
||||
if (!call.response.hasRemaining()) {
|
||||
if (!call.rpcResponse.hasRemaining()) {
|
||||
call.connection.decRpcCount();
|
||||
if (numElements == 1) { // last call fully processes.
|
||||
done = true; // no more data for this channel.
|
||||
|
|
@ -813,7 +821,7 @@ public abstract class Server {
|
|||
done = false; // more calls pending to be sent.
|
||||
}
|
||||
if (LOG.isDebugEnabled()) {
|
||||
LOG.debug(getName() + ": responding to #" + call.id + " from " +
|
||||
LOG.debug(getName() + ": responding to #" + call.callId + " from " +
|
||||
call.connection + " Wrote " + numBytes + " bytes.");
|
||||
}
|
||||
} else {
|
||||
|
|
@ -841,7 +849,7 @@ public abstract class Server {
|
|||
}
|
||||
}
|
||||
if (LOG.isDebugEnabled()) {
|
||||
LOG.debug(getName() + ": responding to #" + call.id + " from " +
|
||||
LOG.debug(getName() + ": responding to #" + call.callId + " from " +
|
||||
call.connection + " Wrote partial " + numBytes +
|
||||
" bytes.");
|
||||
}
|
||||
|
|
@ -1408,18 +1416,24 @@ public abstract class Server {
|
|||
private void processData(byte[] buf) throws IOException, InterruptedException {
|
||||
DataInputStream dis =
|
||||
new DataInputStream(new ByteArrayInputStream(buf));
|
||||
int id = dis.readInt(); // try to read an id
|
||||
RpcPayloadHeader header = new RpcPayloadHeader();
|
||||
header.readFields(dis); // Read the RpcPayload header
|
||||
|
||||
if (LOG.isDebugEnabled())
|
||||
LOG.debug(" got #" + id);
|
||||
Writable param;
|
||||
try {
|
||||
param = ReflectionUtils.newInstance(paramClass, conf);//read param
|
||||
param.readFields(dis);
|
||||
LOG.debug(" got #" + header.getCallId());
|
||||
if (header.getOperation() != RpcPayloadOperation.RPC_FINAL_PAYLOAD) {
|
||||
throw new IOException("IPC Server does not implement operation" +
|
||||
header.getOperation());
|
||||
}
|
||||
Writable rpcRequest;
|
||||
try { //Read the rpc request
|
||||
rpcRequest = ReflectionUtils.newInstance(paramClass, conf);
|
||||
rpcRequest.readFields(dis);
|
||||
} catch (Throwable t) {
|
||||
LOG.warn("Unable to read call parameters for client " +
|
||||
getHostAddress(), t);
|
||||
final Call readParamsFailedCall = new Call(id, null, this);
|
||||
final Call readParamsFailedCall =
|
||||
new Call(header.getCallId(), null, this);
|
||||
ByteArrayOutputStream responseBuffer = new ByteArrayOutputStream();
|
||||
|
||||
setupResponse(responseBuffer, readParamsFailedCall, Status.FATAL, null,
|
||||
|
|
@ -1429,7 +1443,7 @@ public abstract class Server {
|
|||
return;
|
||||
}
|
||||
|
||||
Call call = new Call(id, param, this);
|
||||
Call call = new Call(header.getCallId(), rpcRequest, this, header.getkind());
|
||||
callQueue.put(call); // queue the call; maybe blocked here
|
||||
incRpcCount(); // Increment the rpc count
|
||||
}
|
||||
|
|
@ -1493,8 +1507,8 @@ public abstract class Server {
|
|||
final Call call = callQueue.take(); // pop the queue; maybe blocked here
|
||||
|
||||
if (LOG.isDebugEnabled())
|
||||
LOG.debug(getName() + ": has #" + call.id + " from " +
|
||||
call.connection);
|
||||
LOG.debug(getName() + ": has Call#" + call.callId +
|
||||
"for RpcKind " + call.rpcKind + " from " + call.connection);
|
||||
|
||||
String errorClass = null;
|
||||
String error = null;
|
||||
|
|
@ -1505,7 +1519,7 @@ public abstract class Server {
|
|||
// Make the call as the user via Subject.doAs, thus associating
|
||||
// the call with the Subject
|
||||
if (call.connection.user == null) {
|
||||
value = call(call.connection.protocolName, call.param,
|
||||
value = call(call.connection.protocolName, call.rpcRequest,
|
||||
call.timestamp);
|
||||
} else {
|
||||
value =
|
||||
|
|
@ -1515,7 +1529,7 @@ public abstract class Server {
|
|||
public Writable run() throws Exception {
|
||||
// make the call
|
||||
return call(call.connection.protocolName,
|
||||
call.param, call.timestamp);
|
||||
call.rpcRequest, call.timestamp);
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -1657,7 +1671,7 @@ public abstract class Server {
|
|||
throws IOException {
|
||||
response.reset();
|
||||
DataOutputStream out = new DataOutputStream(response);
|
||||
out.writeInt(call.id); // write call id
|
||||
out.writeInt(call.callId); // write call id
|
||||
out.writeInt(status.state); // write status
|
||||
|
||||
if (status == Status.SUCCESS) {
|
||||
|
|
|
|||
|
|
@ -39,6 +39,7 @@ import javax.net.SocketFactory;
|
|||
import org.apache.commons.logging.*;
|
||||
|
||||
import org.apache.hadoop.io.*;
|
||||
import org.apache.hadoop.ipc.RpcPayloadHeader.RpcKind;
|
||||
import org.apache.hadoop.ipc.VersionedProtocol;
|
||||
import org.apache.hadoop.security.UserGroupInformation;
|
||||
import org.apache.hadoop.security.token.SecretManager;
|
||||
|
|
@ -242,7 +243,7 @@ public class WritableRpcEngine implements RpcEngine {
|
|||
}
|
||||
|
||||
ObjectWritable value = (ObjectWritable)
|
||||
client.call(new Invocation(method, args), remoteId);
|
||||
client.call(RpcKind.RPC_WRITABLE, new Invocation(method, args), remoteId);
|
||||
if (LOG.isDebugEnabled()) {
|
||||
long callTime = System.currentTimeMillis() - startTime;
|
||||
LOG.debug("Call: " + method.getName() + " " + callTime);
|
||||
|
|
|
|||
Loading…
Reference in New Issue