| <!-- |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| --> |
| |
| # `hudi-io` Module |
| |
| This module contains classes that are I/O related, including common abstraction and APIs, readers and writers, etc. |
| |
| ## HFile Reader |
| |
| We implement our own HFile reader (`org.apache.hudi.io.hfile.HFileReaderImpl`) that functionally works on reading HBase |
| HFiles in the Hudi metadata tables, based on the format described below. |
| |
| ## HFile Format |
| |
| Refer to [HFile Format](hfile_format.md) documentation. |
