[SOLR-8997] useCompoundFile should default to true like Lucene

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 15/Apr/16 15:01
• Updated: 26/Apr/17 15:42

Description

See the discussion at the end of SOLR-4941. Essentially, useCompoundFile should default to true, like Lucene. In this sense, we can just not set it if useCompoundFile isn't explicitly set.

Furthermore, it's possible for some combinations of this setting and merge policy's setting to make no sense – specifically configurations that go from not using CFS, to using CFS, then to not using CFS again! If we can detect that this happens, we should log a warning.

Issue Links

• is related to: SOLR-4941 useCompoundFile default has changed, simple config option no longer seems to work