org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB Java Examples

The following examples show how to use org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: NameNodeProxies.java    From hadoop with Apache License 2.0 6 votes vote down vote up
private static NamenodeProtocol createNNProxyWithNamenodeProtocol(
    InetSocketAddress address, Configuration conf, UserGroupInformation ugi,
    boolean withRetries) throws IOException {
  NamenodeProtocolPB proxy = (NamenodeProtocolPB) createNameNodeProxy(
      address, conf, ugi, NamenodeProtocolPB.class);
  if (withRetries) { // create the proxy with retries
    RetryPolicy timeoutPolicy = RetryPolicies.exponentialBackoffRetry(5, 200,
            TimeUnit.MILLISECONDS);
    Map<String, RetryPolicy> methodNameToPolicyMap
         = new HashMap<String, RetryPolicy>();
    methodNameToPolicyMap.put("getBlocks", timeoutPolicy);
    methodNameToPolicyMap.put("getAccessKeys", timeoutPolicy);
    NamenodeProtocol translatorProxy =
        new NamenodeProtocolTranslatorPB(proxy);
    return (NamenodeProtocol) RetryProxy.create(
        NamenodeProtocol.class, translatorProxy, methodNameToPolicyMap);
  } else {
    return new NamenodeProtocolTranslatorPB(proxy);
  }
}
 
Example #2
Source File: TestIsMethodSupported.java    From hadoop with Apache License 2.0 6 votes vote down vote up
@Test
public void testNamenodeProtocol() throws IOException {
  NamenodeProtocol np =
      NameNodeProxies.createNonHAProxy(conf,
          nnAddress, NamenodeProtocol.class, UserGroupInformation.getCurrentUser(),
          true).getProxy();

  boolean exists = RpcClientUtil.isMethodSupported(np,
      NamenodeProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
      RPC.getProtocolVersion(NamenodeProtocolPB.class), "rollEditLog");

  assertTrue(exists);
  exists = RpcClientUtil.isMethodSupported(np,
      NamenodeProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
      RPC.getProtocolVersion(NamenodeProtocolPB.class), "bogusMethod");
  assertFalse(exists);
}
 
Example #3
Source File: NameNodeProxies.java    From big-c with Apache License 2.0 6 votes vote down vote up
private static NamenodeProtocol createNNProxyWithNamenodeProtocol(
    InetSocketAddress address, Configuration conf, UserGroupInformation ugi,
    boolean withRetries) throws IOException {
  NamenodeProtocolPB proxy = (NamenodeProtocolPB) createNameNodeProxy(
      address, conf, ugi, NamenodeProtocolPB.class);
  if (withRetries) { // create the proxy with retries
    RetryPolicy timeoutPolicy = RetryPolicies.exponentialBackoffRetry(5, 200,
            TimeUnit.MILLISECONDS);
    Map<String, RetryPolicy> methodNameToPolicyMap
         = new HashMap<String, RetryPolicy>();
    methodNameToPolicyMap.put("getBlocks", timeoutPolicy);
    methodNameToPolicyMap.put("getAccessKeys", timeoutPolicy);
    NamenodeProtocol translatorProxy =
        new NamenodeProtocolTranslatorPB(proxy);
    return (NamenodeProtocol) RetryProxy.create(
        NamenodeProtocol.class, translatorProxy, methodNameToPolicyMap);
  } else {
    return new NamenodeProtocolTranslatorPB(proxy);
  }
}
 
Example #4
Source File: TestIsMethodSupported.java    From big-c with Apache License 2.0 6 votes vote down vote up
@Test
public void testNamenodeProtocol() throws IOException {
  NamenodeProtocol np =
      NameNodeProxies.createNonHAProxy(conf,
          nnAddress, NamenodeProtocol.class, UserGroupInformation.getCurrentUser(),
          true).getProxy();

  boolean exists = RpcClientUtil.isMethodSupported(np,
      NamenodeProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
      RPC.getProtocolVersion(NamenodeProtocolPB.class), "rollEditLog");

  assertTrue(exists);
  exists = RpcClientUtil.isMethodSupported(np,
      NamenodeProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER,
      RPC.getProtocolVersion(NamenodeProtocolPB.class), "bogusMethod");
  assertFalse(exists);
}
 
Example #5
Source File: ProxyServer.java    From nnproxy with Apache License 2.0 5 votes vote down vote up
public void start() throws IOException {
    int rpcHandlerCount = conf.getInt(ProxyConfig.PROXY_HANDLER_COUNT, ProxyConfig.PROXY_HANDLER_COUNT_DEFAULT);
    RPC.setProtocolEngine(conf, ClientNamenodeProtocolPB.class,
            ProtobufRpcEngine.class);
    RPC.setProtocolEngine(conf, NamenodeProtocolPB.class,
            ProtobufRpcEngine.class);

    this.protocol = (ClientProtocol) Proxy.newProxyInstance(
            this.getClass().getClassLoader(),
            new Class[]{ClientProtocol.class},
            this.invocationHandler);

    ClientNamenodeProtocolPB proxy = new ClientNamenodeProtocolServerSideTranslatorPB(this.protocol);
    BlockingService clientNNPbService = ClientNamenodeProtocolProtos.ClientNamenodeProtocol.
            newReflectiveBlockingService(proxy);

    int port = conf.getInt(ProxyConfig.RPC_PORT, ProxyConfig.RPC_PORT_DEFAULT);

    this.rpcServer = new RPC.Builder(conf)
            .setProtocol(org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolPB.class)
            .setInstance(clientNNPbService).setBindAddress("0.0.0.0")
            .setPort(port).setNumHandlers(rpcHandlerCount)
            .setVerbose(false).build();
    this.rpcServer.start();

    InetSocketAddress listenAddr = rpcServer.getListenerAddress();
    rpcAddress = new InetSocketAddress("0.0.0.0", listenAddr.getPort());
}