[ATLAS-2717] Data Migration: Importing Entity with Attribute of Classification Type from pre-v1.0

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0, trunk
• Fix Version/s: 1.0.0
• Component/s: atlas-core
• Assignee: Ashutosh Mestry
• Reporter: Ashutosh Mestry
• Created: 24/May/18 04:54
• Updated: 26/May/18 01:09
• Resolved: 26/May/18 01:09

Description

Background

In versions prior to v1.0, it was possible to have entity types that contained attributes with classification as their type.

In v1.0 creation of such types is not supported.

The impact is that data migration fails during AtlasTypesDef (atlas-migration-typesdef.json attached_)_ import with this error:

org.apache.atlas.exception.AtlasBaseException: createComplexTraitTypeTestprayivofx4.complexTrait: invalid attribute type. Attribute cannot be of type classification

Solution

Given the type mentioned is no longer supported, the solution would be to build a new type that mimics the old type so that data is moved correctly.

Approach:

• Create a AtlasStructDef with a classification name prefixed with legacy.
• Use the new type as the type of the attribute.
• During edge import, modify the edge label such that it is pointing to a struct rather than a classification.

 

Issue Links

• links to: Code review