[HADOOP-9969] TGT expiration doesn't trigger Kerberos relogin

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.1.0-beta, 2.5.0, 2.5.2, 2.6.0, 2.6.1, 2.8.0, 2.7.1, 2.6.2, 2.6.3
• Component/s: ipc, security

Environment

IBM JDK7

• Assignee: Unassigned
• Reporter: Yu Gao
• Created: 17/Sep/13 00:22
• Updated: 13/Mar/18 09:22

Description

In HADOOP-9698 & HADOOP-9850, RPC client and Sasl client have been changed to respect the auth method advertised from server, instead of blindly attempting the configured one at client side. However, when TGT has expired, an exception will be thrown from SaslRpcClient#createSaslClient(SaslAuth authType), and at this time the authMethod still holds the initial value which is SIMPLE and never has a chance to be updated with the expected one requested by server, so kerberos relogin will not happen.