[IMPALA-4081] Class rename will break old external data sources

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: compatibility
• Target Version: Impala 2.8.0
• Assignee: Justin Erickson
• Reporter: Matthew Jacobs
• Created: 06/Sep/16 19:54
• Updated: 05/Oct/16 17:20
• Resolved: 05/Oct/16 17:20

Description

IMPALA-3786 involves renaming all Java packages to org.apache.impala from com.cloudera.impala.

We have an "external data source" API which exposes an interface com.cloudera.impala.v1.ExternalDataSource that external "data sources" can implement and register with Impala. When we change the package names, this will break. We need to think about backwards compatibility or being OK with the breaking change and recommending some upgrade path.