我有一个genericudf（见下面的代码），它在hadoop-1和hive-0.12上运行良好。但是当使用hive-0.13+hadoop-2测试相同的genericudf时，我得到了以下错误。
vertex失败，vertexname=map 12，vertexid=vertex\u 1409698731658\u 42202\u 1\u 00，diagnostics=[顶点输入：ccv初始值设定项失败，org.apache.hive.com.esotericsoftware.kry o.kryoexception:找不到类：com...id1
这是我的自定义项代码。

package com.xxx.xxx;
import org.apache.hadoop.hive.*;
public class Id1 extends GenericUDF {
    private MapredContext context;
    private long sequenceNum = 0;
    private static final int padLength = 10;
    StringBuilder sb = null;
    public ObjectInspector initialize(ObjectInspector[] arguments)
            throws UDFArgumentException {
        sequenceNum = 0;
        sb = new StringBuilder();
        return PrimitiveObjectInspectorFactory.javaStringObjectInspector;
    }
    public Object evaluate(DeferredObject[] arguments) throws HiveException {
        int sbLength = sb.toString().length();
        if (sbLength > 0)
            sb.replace(0, sbLength, "");
        String taskId = null;
        if (context.getJobConf() != null)
            taskId = context.getJobConf().get("mapred.taskid");
        sequenceNum++;
        if (taskId != null) {
            sb.append(taskId.replace("attempt_", ""));
        }
        int i = 0;
        String seqStr = String.valueOf(sequenceNum);
        sb.append(seqStr);
        return sb.toString();
    }
    public String getDisplayString(String[] children) {
        return "id1()";
    }
    @Override
    public void configure(MapredContext context) {
        this.context = context;
    }
}

我确信这与hive-0.13有关，但看不到任何与此错误相关的帖子。