[SOLR-14445] Add documentation about the DIH Entity Caching

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 8.5.1
• Fix Version/s: 8.8
• Component/s: documentation
• Labels: DIH documentation
• Assignee: Jan Høydahl
• Reporter: Tobias Kässmann
• Created: 29/Apr/20 10:31
• Updated: 21/Oct/20 11:41
• Resolved: 21/Oct/20 11:41

Description

This will add a hint that would've saved me some hours of debugging.

When you use the DIH Entity Caching the cache keys must have the same types. The only hint in solr is a `ClassCastException`.

Pullrequest on Github: https://github.com/apache/lucene-solr/pull/1466

Issue Links

• is superceded by: SOLR-14783 Remove DIH from 9.0
• links to: GitHub Pull Request #1466
• links to: GitHub Pull Request #2013