java 异常com/google/protobuf/UnknownFieldSet

Caused by: java.lang.VerifyError: class org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Result overrides final method getUnknownFields.()Lcom/google/protobuf/UnknownFieldSet;
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.(ProtobufUtil.java:211)
        at org.apache.hadoop.hbase.ClusterId.parseFrom(ClusterId.java:64)
        at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:75)
        at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:86)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:850)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.(ConnectionManager.java:635)
        ... 57 more

protobuf-java-2.4.0a.jar的GeneratedMessage类代码

  //@Override (Java 1.6 override semantics, but we must support 1.5)
  public final UnknownFieldSet getUnknownFields() {
    return unknownFields;
  }

protobuf-java-2.5.0.jar版本的GeneratedMessage类代码

  //@Override (Java 1.6 override semantics, but we must support 1.5)
  public UnknownFieldSet getUnknownFields() {
    throw new UnsupportedOperationException(
        "This is supposed to be overridden by subclasses.");
  }

将原来的final方法改成了需要子类重写的方法。

所以会报上面出现的不能重写final方法的错。

解决办法：换protobuf-java-2.5.0.jar版本及以上版本的jar包