[SOLR-13160] copyField with bare wildcard source duplicates content in dest field

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 7.6
• Component/s: Schema and Analysis
• Assignee: Unassigned
• Reporter: Dan Meehl
• Created: 21/Jan/19 21:41
• Updated: 08/Jun/19 15:02

Description

A copyField directive in the schema with source="*" will duplicate all content that was already in dest. This doesn't seem like a show stopping problem, but it was a surprise to me, and I can't think of a reason you'd want that to happen. Worst case scenario is that it makes your index 2x larger for no reason.

The first patch adds a test into CopyFieldTest that shows the behavior.