[LUCENE-8045] ParallelReader does not propagate doc values generation numbers

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.2
• Lucene Fields: New
• Assignee: Alan Woodward
• Reporter: Alan Woodward
• Created: 09/Nov/17 09:44
• Updated: 28/Aug/22 15:21
• Resolved: 09/Nov/17 14:03

Description

Exposed by this test failure: https://jenkins.thetaphi.de/job/Lucene-Solr-7.x-Linux/777/testReport/junit/org.apache.lucene.search/TestLRUQueryCache/testDocValuesUpdatesDontBreakCache/

A reader is randomly wrapped with a ParallelLeafReader, which does not then correctly propagate the dvGen into its own FieldInfo.