[HADOOP-14987] Improve KMSClientProvider log around delegation token checking

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.3
• Fix Version/s: 3.0.0, 2.10.0, 2.8.4, 2.9.2
• Hadoop Flags: Reviewed
• Assignee: Xiaoyu Yao
• Reporter: Xiaoyu Yao
• Created: 26/Oct/17 21:48
• Updated: 07/May/18 21:21
• Resolved: 03/Nov/17 23:13

Description

KMSClientProvider#containsKmsDt uses SecurityUtil.buildTokenService(addr) to build the key to look for KMS-DT from the UGI's token map. The token lookup key here varies depending on the KMSClientProvider's configuration value for hadoop.security.token.service.use_ip. In certain cases, the token obtained with non-matching hadoop.security.token.service.use_ip setting will not be recognized by KMSClientProvider. This ticket is opened to improve logs for troubleshooting KMS delegation token related issues like this.

Issue Links

• causes: HADOOP-15441 Log kms url and token service at debug level.