[HADOOP-8159] NetworkTopology: getLeaf should check for invalid topologies

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0, 2.0.0-alpha
• Hadoop Flags: Reviewed
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 10/Mar/12 01:06
• Updated: 19/Oct/19 03:11
• Resolved: 26/Mar/12 22:20

Description

Currently, in NetworkTopology, getLeaf doesn't do too much validation on the InnerNode object itself. This results in us getting ClassCastException sometimes when the network topology is invalid. We should have a less confusing exception message for this case.

Issue Links

• is related to: HADOOP-12173 NetworkTopology#add calls NetworkTopology#toString always
• is related to: HADOOP-16662 Remove unnecessary InnerNode check in NetworkTopology#add()
• relates to: HDFS-3129 NetworkTopology: add test that getLeaf should check for invalid topologies