org.apache.thrift.transport.TTransportException: null

Question

问题描述

每次client调用server端，均有正常返回，但是server端还会多打出一些异常信息，如下。

org.apache.thrift.transport.TTransportException: null
    at org.apache.thrift.transport.TIOStreamTransport.read(TIOStreamTransport.java:132)
    at org.apache.thrift.transport.TTransport.readAll(TTransport.java:86)
    at org.apache.thrift.protocol.TBinaryProtocol.readAll(TBinaryProtocol.java:425)
    at org.apache.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:321)
    at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:225)
    at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:27)
    at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:310)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

问题出现的环境背景及自己尝试过哪些方法

对thrift不熟悉，刚接触，根本不知道哪里去找原因。

相关代码

server端代码

import com.username.service.controllers.ServiceImpl;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TCompactProtocol;
import org.apache.thrift.server.TServer;
import org.apache.thrift.server.TSimpleServer;
import org.apache.thrift.server.TThreadPoolServer;
import org.apache.thrift.transport.TServerSocket;
import org.apache.thrift.transport.TServerTransport;
import org.apache.thrift.transport.TTransportException;

public class StartService implements Runnable{
    private static boolean breg = false;

    public void starWeather() throws TTransportException {
        TBinaryProtocol.Factory proFactory = new TBinaryProtocol.Factory();

        ServiceImpl handler = new ServiceImpl();
        WeatherService.Processor processor= new WeatherService.Processor(handler);
        TServerTransport serverTransport = new TServerSocket(9000);

        TThreadPoolServer.Args serverArgs = new TThreadPoolServer.Args(serverTransport);
        serverArgs.processor(processor);
        serverArgs.protocolFactory(proFactory);
        TServer server = new TThreadPoolServer(serverArgs);


        breg = true;
        server.serve();
    }


    @Override
    public void run() {
        try {
            if (!breg)
                starWeather();
        } catch (TTransportException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws TTransportException {
        StartService server = new StartService();
        server.starWeather();
    }
}

client端代码

package com.xiaohuan.client;

import com.username.rpc.weather_service.WeatherService;
import com.username.rpc.weather_service.entity.Weather;
import com.username.rpc.weather_service.request.GetCityWeatherRequest;
import com.username.rpc.weather_service.response.GetCityWeatherResponse;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.RetryNTimes;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TCompactProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.transport.TFramedTransport;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport;
import org.apache.thrift.transport.TTransportException;
import java.util.*;

import static com.username.client.WeatherConstants.RPCNAME;
import static com.username.client.ZkConstants.connectString;

public class CallWeatherRPC {

    public String callWeather(String ip, int port, String city) {
        String retString = null;
        try {
            TTransport transport = new TSocket(ip, port);
            transport.open();
            TProtocol protocol = new TBinaryProtocol(transport);
            WeatherService.Client client = new WeatherService.Client(protocol);
            GetCityWeatherRequest request = new GetCityWeatherRequest();
            request.setCity(city);

            GetCityWeatherResponse response = client.get_city_weather(request);
            if(response.isSuccess()){
                List<Weather> weatherList = response.getWeather();
                System.out.println(weatherList.get(0).getCity());
                retString = weatherList.get(0).getCity() + weatherList.get(0).getTemperature();
            }else{
                System.out.println(response.getError_message());
            }
            transport.close();
        } catch (TTransportException e) {
            e.printStackTrace();
        } catch (TException e) {
            e.printStackTrace();
        }
        System.out.println("retString:"+retString);
        return retString;
    }

    public static void main(String[] args) {
        CallWeatherRPC client = new CallWeatherRPC();
        client.callWeather("127.0.0.1", 9000, "123");
    }

}

你期待的结果是什么？实际看到的错误信息又是什么？

虽然不影响功能，但是为什么server会多打印异常信息呢

Answer 1

是thrift的异常捕获代码写错了，没有处理到。
0.12.0版本的TThreadPoolServer.java第315行

} catch (TException tx) {
        // A.这里的问题。
        LOGGER.error("Thrift error occurred during processing of message.", tx);
      } catch (Exception x) {
        // We'll usually receive RuntimeException types here
        // Need to unwrap to ascertain real causing exception before we choose to ignore
        Throwable realCause = x.getCause();
        // Ignore err-logging all transport-level/type exceptions
        if ((realCause != null && realCause instanceof TTransportException)
        
            // B.这里的代码应该放到A处，TTransportException是TException 的子类，
            // A处已经把异常捕获了，根本不会进入这里，导致打印错误。可以参看0.11.0
            // 的代码，捕获到TTransportException异常是不做任何处理的。
            || (x instanceof TTransportException)) {
          if (LOGGER.isDebugEnabled()) {
            // Write to debug, just in case the exception gets required
            LOGGER
                .debug("Received TTransportException during processing of message, ignoring: ", x);
          }
        } else {
          // Log the exception at error level and continue
          LOGGER.error("Error occurred during processing of message.", x);
        }
      }

Answer 2

这个代码应该跑不起来吧，能否给一个完整的代码，方便本地调试排查。

Answer 3

org.apache.thrift.transport.TTransportException: null 这个解决了吗？

Answer 4

本人也遇到到了相同的问题，采样的IntelliJ idea， thrift 0.12.0, 不知道楼主是否有解决该问题。

最新的thrift 0.12.0 线程池模型存在问题，将thrift版本切换为0.10.0，此问题就解决了