软件版本

项目	版本
Hadoop	apache hadoop-2.7.2

代码实现

实现该功能，需修改Hadoop源码中的FSDownload.java文件。

FSDownload.java原始代码可参考：https://github.com/apache/hadoop/blob/rel/release-3.2.0/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/FSDownload.java

修改“hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/FSDownload.java”文件，新增aarch64PyMix(File dst)方法，该方法实现在ARM平台上将解压文件改名。

private void aarch64PyMix(File dst) {  
  String dstPath = dst.getAbsolutePath();  
  String fileFullName = dst.getName();  
  String fileName = fileFullName.substring(0,fileFullName.length() - 4);  
  String orgDirName = dstPath + File.separator + fileName;  
  String aarch64DirName = dstPath + File.separator + fileName + "_aarch64";
  File orgFile = new File(orgDirName);
  File aarch64File = new File(aarch64DirName);
  if (orgFile.exists() && aarch64File.exists() && "aarch64".equals(System.getProperty("os.arch"))) {
     orgFile.renameTo(new File(orgDirName + "_bak"));
     aarch64File.renameTo(new File(orgDirName));
  }
}

在“hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/FSDownload.java”文件中，zip在unpack方法中的ARCHIVE条件下解压后，并增加对aarch64PyMix方法的调用。

...
case ARCHIVE:
...  
  } else if (lowerDst.endsWith(".zip")) {
    FileUtil.unZip(localrsrc, dst);
    aarch64PyMix(dst);
  } else if (lowerDst.endsWith(".tar.gz")) ||
...

方案实现

软件版本

代码实现