code: public <T> ESDatas<T> searchAllParallel(String index,  Class<T> type,int thread) throws ElasticSearchException{
  			return searchAllParallel(index,  ClientInterface.DEFAULT_FETCHSIZE,type,thread);
  	}
docs: 并行检索索引所有数据,每批次返回默认为5000条数据，
  @param index
  @param type
  @param <T>
  @return
  @throws ElasticSearchException