[HADOOP-13692] hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts.

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha2
• Component/s: fs/s3
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 06/Oct/16 23:32
• Updated: 12/Jun/23 21:43
• Resolved: 07/Oct/16 18:50

Description

If an end user's application has a dependency on hadoop-aws and no other Hadoop artifacts, then it picks up a transitive dependency on Jackson 2.5.3 jars through the AWS SDK. This can cause conflicts at deployment time, because Hadoop has a dependency on version 2.2.3, and the 2 versions are not compatible with one another. We can prevent this problem by changing hadoop-aws to declare explicit dependencies on the Jackson artifacts, at the version Hadoop wants.