[HDFS-4295] Using port 1023 should be valid when starting Secure DataNode

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.3-alpha
• Component/s: security
• Labels: trivial
• Hadoop Flags: Reviewed
• Assignee: Stephen Chu
• Reporter: Stephen Chu
• Created: 10/Dec/12 19:58
• Updated: 03/Sep/14 23:09
• Resolved: 10/Dec/12 22:47

Description

In SecureDataNodeStarter:

if ((ss.getLocalPort() >= 1023 || listener.getPort() >= 1023) &&
        UserGroupInformation.isSecurityEnabled()) {
      throw new RuntimeException("Cannot start secure datanode with unprivileged ports");
}

This prohibits using port 1023, but this should be okay because only root can listen to ports below 1024.

We can change the >= to >.