[HDFS-14850] Optimize FileSystemAccessService#getFileSystemConfiguration

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.1.4, 3.2.2
• Component/s: httpfs, performance
• Hadoop Flags: Reviewed
• Assignee: Lisheng Sun
• Reporter: Lisheng Sun
• Created: 16/Sep/19 02:26
• Updated: 04/Oct/19 01:27
• Resolved: 29/Sep/19 00:20

Description

 @Override
  public Configuration getFileSystemConfiguration() {
    Configuration conf = new Configuration(true);
    ConfigurationUtils.copy(serviceHadoopConf, conf);
    conf.setBoolean(FILE_SYSTEM_SERVICE_CREATED, true);

    // Force-clear server-side umask to make HttpFS match WebHDFS behavior
    conf.set(FsPermission.UMASK_LABEL, "000");

    return conf;
  }

As above code，when call FileSystemAccessService#getFileSystemConfiguration,current code new Configuration every time.
It is not necessary and affects performance. I think it only need to new Configuration in FileSystemAccessService#init once and FileSystemAccessService#getFileSystemConfiguration get it.