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Accessing OBS

Updated on 2022-09-14 GMT+08:00

Function Description

The OBS access process is as follows:

  1. Set fs.obs.access.key and fs.obs.secret.key.
  2. Use the FileSystem instance to read, add, and delete various resources.
NOTE:

The appending operation is not supported.

Sample Code

The following provides code snippets for instantiating the FileSystem. For complete codes, see the HdfsMain class in com.huawei.bigdata.hdfs.examples.

/**
   * 
   * Add configuration file if the application run on the linux ,then need make
   * the path of the core-site.xml and hdfs-site.xml to in the linux client file
   * 
   */
  private void confLoad() throws IOException {
    conf = new Configuration();
    // conf file
    conf.addResource(new Path(PATH_TO_HDFS_SITE_XML));
    conf.addResource(new Path(PATH_TO_CORE_SITE_XML));
    conf.set("fs.obs.access.key","*** Provide your Access Key ***");
    conf.set("fs.obs.secret.key","*** Provide your Secret Key ***");
    }

  /**
   * build HDFS instance
   */
  private void instanceBuild() throws IOException {
    // get filesystem
 // fSystem = FileSystem.get(conf);
    fSystem =  FileSystem.get(URI.create("obs://[BuketName]"),conf);
  }
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