[HADOOP-14150] Implement getHomeDirectory() method in NativeAzureFileSystem

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.9.0, 3.0.0-alpha4
• Component/s: fs/azure
• Target Version/s: 2.9.0, 3.0.0-alpha4
• Hadoop Flags: Reviewed
• Assignee: Santhosh G Nayak
• Reporter: Namit Maheshwari
• Created: 07/Mar/17 04:42
• Updated: 24/Apr/18 20:46
• Resolved: 07/Mar/17 23:01

Description

org.apache.hadoop.fs.azure.NativeAzureFileSystem does not override FileSystem#getHomeDirectory() method.
So, whenever NativeAzureFileSystem#getHomeDirectory() gets called getHomeDirectory() from FileSystem will be invoked, which has code like below,

public Path getHomeDirectory() {
    return this.makeQualified(
        new Path(USER_HOME_PREFIX + "/" + System.getProperty("user.name")));
  }

In secure environment, it returns home directory of System.getProperty("user.name") instead of Kerberos principal/UGI.
So, the proposal is to override the getHomeDirectory() method in NativeAzureFileSystem and have it return the home directory for the Kerberos principal/ugi.