Vinay created HADOOP-9019:
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Summary: KerberosAuthenticator.doSpnegoSequence(..) should create
a HTTP principal with hostname everytime
Key: HADOOP-9019
URL: https://issues.apache.org/jira/browse/HADOOP-9019
Project: Hadoop Common
Issue Type: Bug
Reporter: Vinay
in KerberosAuthenticator.doSpnegoSequence(..) following line of code will just
create a principal of the form "HTTP/<host>",
{code} String servicePrincipal =
KerberosUtil.getServicePrincipal("HTTP",
KerberosAuthenticator.this.url.getHost());{code}
but uri.getHost() is not sure of always getting hostname. If uri contains IP,
then it just returns IP.
For SPNEGO authentication principal should always be created with <hostname>.
This code should be something like this, which will look /etc/hosts to get
hostname
{code} String hostname = InetAddress.getByName(
KerberosAuthenticator.this.url.getHost()).getHostName();
String servicePrincipal = KerberosUtil.getServicePrincipal("HTTP",
hostname);{code}
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