import org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext; //导入依赖的package包/类
private LimitedEditLogAnswer causeFailureOnEditLogRead() throws IOException {
  FSEditLog spyEditLog = NameNodeAdapter.spyOnEditLog(nn1);
  LimitedEditLogAnswer answer = new LimitedEditLogAnswer(); 
  doAnswer(answer).when(spyEditLog).selectInputStreams(
      anyLong(), anyLong(), (MetaRecoveryContext)anyObject(), anyBoolean());
  return answer;
}
 

import org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext; //导入依赖的package包/类
private LimitedEditLogAnswer causeFailureOnEditLogRead() throws IOException {
  FSEditLog spyEditLog = spy(nn1.getNamesystem().getEditLogTailer()
      .getEditLog());
  LimitedEditLogAnswer answer = new LimitedEditLogAnswer(); 
  doAnswer(answer).when(spyEditLog).selectInputStreams(
      anyLong(), anyLong(), (MetaRecoveryContext)anyObject(), anyBoolean());
  nn1.getNamesystem().getEditLogTailer().setEditLog(spyEditLog);
  
  return answer;
}
 

import org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext; //导入依赖的package包/类
public MetaRecoveryContext createRecoveryContext() {
  if (!name.equals(RECOVER.name))
    return null;
  return new MetaRecoveryContext(force);
}
 

import org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext; //导入依赖的package包/类
public MetaRecoveryContext createRecoveryContext() {
  if (!name.equals(RECOVER.name)) {
    return null;
  }
  return new MetaRecoveryContext(force);
}