@Override
  protected int doWork() throws Exception {
    return (validateHFileContent(getConf())) ? EXIT_SUCCESS : EXIT_FAILURE;
  }
Check HFile contents are readable by HBase 2.
@param conf used configuration
@return number of HFiles corrupted HBase
@throws IOException if a remote or network exception occurs
hbase-server/src/main/java/org/apache/hadoop/hbase/tool/HFileContentValidator.java