[HDFS-16188] RBF: Router to support resolving monitored namenodes with DNS

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rbf
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Leon Gao
• Reporter: Leon Gao
• Created: 27/Aug/21 01:09
• Updated: 27/Jan/24 02:37
• Resolved: 10/Sep/21 23:41

Description

We can use a DNS round-robin record to configure list of monitored namenodes, so we don't have to reconfigure everything namenode hostname is changed. For example, in containerized environment the hostname of namenode/observers can change pretty often.

Issue Links

• is a child of: HDFS-15831 Adopt more DNS resolving for HDFS
• links to: GitHub Pull Request #3346