[HADOOP-6871] When the value of a configuration key is set to its unresolved form, it causes the IllegalStateException in Configuration.get() stating that substitution depth is too large.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: conf
• Hadoop Flags: Reviewed
• Assignee: Arvind Prabhakar
• Reporter: Arvind Prabhakar
• Created: 21/Jul/10 22:08
• Updated: 10/Oct/16 19:16
• Resolved: 25/May/12 14:03

Description

When a configuration value is set to its unresolved expression string, it leads to recursive substitution attempts in Configuration.substituteVars(String) method until the max substitution check kicks in and raises an IllegalStateException indicating that the substitution depth is too large. For example, the configuration key "foobar" with a value set to "${foobar}" will cause this behavior.

While this is not a usual use case, it can happen in build environments where a property value is not specified and yet being passed into the test mechanism leading to failures due to this limitation.

Issue Links

• is superceded by: HADOOP-13699 Configuration does not substitute multiple references to the same var