[SOLR-3262] Remove "threads" from DIH (Trunk only)

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.0-ALPHA
• Fix Version/s: 4.0-ALPHA
• Component/s: contrib - DataImportHandler
• Assignee: James Dyer
• Reporter: James Dyer
• Created: 21/Mar/12 18:36
• Updated: 10/May/13 10:40
• Resolved: 26/Mar/12 15:05

Description

SOLR-1352 introduced a multi-threading feature for DataImportHandler. Historically, this feature only seemed to work in a limited set of cases and I don't think we can guarantee users that using "threads" will behave consistently. Also, the multi-threaded option adds considerable complexity making code refactoring difficult.

I propose removing "threads" from Trunk. (But keep it in 3.x, applying any bug fixes for it there.) This can be a first step in improving the DIH code base.

Eventually we can possibly add a carefully though-out "threads" implementation back in.