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Posted to hdfs-issues@hadoop.apache.org by "Stephen Chu (JIRA)" <ji...@apache.org> on 2012/12/10 20:59:22 UTC

[jira] [Created] (HDFS-4295) Using port 1023 should be valid when starting Secure DataNode

Stephen Chu created HDFS-4295:
---------------------------------

             Summary: Using port 1023 should be valid when starting Secure DataNode
                 Key: HDFS-4295
                 URL: https://issues.apache.org/jira/browse/HDFS-4295
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: security
    Affects Versions: 2.0.0-alpha
            Reporter: Stephen Chu


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

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

We can change the >= to >.

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