HADOOP-18628. IPC Server Connection should log host name before returning VersionMismatch error (#5385)
Contributed by Viraj Jasani
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cd2401d2cc
commit
8c9c68c19e
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@ -1871,11 +1871,26 @@ public abstract class Server {
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private long lastContact;
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private int dataLength;
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private Socket socket;
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// Cache the remote host & port info so that even if the socket is
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// disconnected, we can say where it used to connect to.
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private String hostAddress;
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private int remotePort;
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private InetAddress addr;
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/**
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* Client Host IP address from where the socket connection is being established to the Server.
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*/
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private final String hostAddress;
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/**
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* Client remote port used for the given socket connection.
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*/
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private final int remotePort;
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/**
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* Address to which the socket is connected to.
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*/
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private final InetAddress addr;
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/**
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* Client Host address from where the socket connection is being established to the Server.
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*/
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private final String hostName;
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IpcConnectionContextProto connectionContext;
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String protocolName;
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@ -1919,8 +1934,12 @@ public abstract class Server {
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this.isOnAuxiliaryPort = isOnAuxiliaryPort;
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if (addr == null) {
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this.hostAddress = "*Unknown*";
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this.hostName = this.hostAddress;
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} else {
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// host IP address
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this.hostAddress = addr.getHostAddress();
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// host name for the IP address
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this.hostName = addr.getHostName();
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}
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this.remotePort = socket.getPort();
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this.responseQueue = new LinkedList<RpcCall>();
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@ -1936,7 +1955,7 @@ public abstract class Server {
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@Override
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public String toString() {
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return getHostAddress() + ":" + remotePort;
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return hostName + ":" + remotePort + " / " + hostAddress + ":" + remotePort;
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}
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boolean setShouldClose() {
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@ -2339,18 +2358,17 @@ public abstract class Server {
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}
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if (!RpcConstants.HEADER.equals(dataLengthBuffer)) {
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LOG.warn("Incorrect RPC Header length from {}:{} "
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+ "expected length: {} got length: {}",
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hostAddress, remotePort, RpcConstants.HEADER, dataLengthBuffer);
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LOG.warn("Incorrect RPC Header length from {}:{} / {}:{}. Expected: {}. Actual: {}",
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hostName, remotePort, hostAddress, remotePort, RpcConstants.HEADER,
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dataLengthBuffer);
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setupBadVersionResponse(version);
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return -1;
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}
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if (version != CURRENT_VERSION) {
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//Warning is ok since this is not supposed to happen.
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LOG.warn("Version mismatch from " +
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hostAddress + ":" + remotePort +
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" got version " + version +
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" expected version " + CURRENT_VERSION);
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LOG.warn("Version mismatch from {}:{} / {}:{}. "
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+ "Expected version: {}. Actual version: {} ", hostName,
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remotePort, hostAddress, remotePort, CURRENT_VERSION, version);
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setupBadVersionResponse(version);
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return -1;
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}
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@ -1170,6 +1170,10 @@ public class TestIPC {
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call(client, addr, serviceClass, conf);
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Connection connection = server.getConnections()[0];
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LOG.info("Connection is from: {}", connection);
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assertEquals(
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"Connection string representation should include both IP address and Host name", 2,
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connection.toString().split(" / ").length);
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int serviceClass2 = connection.getServiceClass();
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assertFalse(noChanged ^ serviceClass == serviceClass2);
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client.stop();
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@ -1827,6 +1827,11 @@ public class TestRPC extends TestRpcBase {
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// if it wasn't fatal, verify there's only one open connection.
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Connection[] conns = server.getConnections();
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assertEquals(reqName, 1, conns.length);
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String connectionInfo = conns[0].toString();
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LOG.info("Connection is from: {}", connectionInfo);
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assertEquals(
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"Connection string representation should include both IP address and Host name", 2,
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connectionInfo.split(" / ").length);
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// verify whether the connection should have been reused.
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if (isDisconnected) {
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assertNotSame(reqName, lastConn, conns[0]);
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