TestWrappedRecordReaderClassloader.java 文件源码

@SuppressWarnings("unchecked")
public RR_ClassLoaderChecker(JobConf job) {
  assertTrue("The class loader has not been inherited from "
      + CompositeRecordReader.class.getSimpleName(),
      job.getClassLoader() instanceof Fake_ClassLoader);

  keyclass = (Class<? extends K>) job.getClass("test.fakeif.keyclass",
      NullWritable.class, WritableComparable.class);
  valclass = (Class<? extends V>) job.getClass("test.fakeif.valclass",
      NullWritable.class, WritableComparable.class);
}