import org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler; //导入依赖的package包/类
protected LogHandler createLogHandler(Configuration conf, Context context,
    DeletionService deletionService) {
  if (conf.getBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED,
      YarnConfiguration.DEFAULT_LOG_AGGREGATION_ENABLED)) {
    return new LogAggregationService(this.dispatcher, context,
        deletionService, dirsHandler);
  } else {
    return new NonAggregatingLogHandler(this.dispatcher, deletionService,
                                        dirsHandler,
                                        context.getNMStateStore());
  }
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.loghandler.NonAggregatingLogHandler; //导入依赖的package包/类
protected LogHandler createLogHandler(Configuration conf, Context context,
    DeletionService deletionService) {
  if (conf.getBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED,
      YarnConfiguration.DEFAULT_LOG_AGGREGATION_ENABLED)) {
    return new LogAggregationService(this.dispatcher, context,
        deletionService, dirsHandler);
  } else {
    return new NonAggregatingLogHandler(this.dispatcher, deletionService,
                                        dirsHandler);
  }
}