Initializing HBase Configurations

Function

HBase obtain configuration items by using the login method. The configuration items include user login information and security authentication information.

Example Codes

• For versions earlier than MRS 3.3.0-LTS:

  The following code snippet belongs to the init method in the TestMain class of the com.huawei.bigdata.hbase.examples package.

  private static void init() throws IOException {
      // Default load from conf directory
      conf = HBaseConfiguration.create();
      //In Windows environment
      String userdir = TestMain.class.getClassLoader().getResource("conf").getPath() + File.separator;
      //In Linux environment
      //String userdir = System.getProperty("user.dir") + File.separator + "conf" + File.separator;
      conf.addResource(new Path(userdir + "core-site.xml"), false);
      conf.addResource(new Path(userdir + "hdfs-site.xml"), false);
      conf.addResource(new Path(userdir + "hbase-site.xml"), false);
    }

• For MRS 3.3.0-LTS or later versions:

  The following code snippet belongs to the createClientConf method in the createClientConf class of the com.huawei.bigdata.hadoop.security.examples package.

  public static Configuration createClientConf() {
      // In Windows environment
      String userDir = Utils.class.getClassLoader().getResource(CONF_DIRECTORY).getPath() + File.separator;
      // In Linux environment
      // String userDir = System.getProperty("user.dir") + File.separator + CONF_DIRECTORY + File.separator;
      return createConfByUserDir(userDir);
  }
  public static Configuration createConfByUserDir(String userDir) {
      // Default load from conf directory
      Configuration conf = HBaseConfiguration.create();
      if (userDir == null || userDir.isEmpty()) {
          return conf;
      }
      conf.addResource(new Path(userDir + CLIENT_CORE_FILE), false);
      conf.addResource(new Path(userDir + CLIENT_HDFS_FILE), false);
      conf.addResource(new Path(userDir + CLIENT_HBASE_FILE), false);
      return conf;
  }