[SOLR-3484] LogUpdateProcessor throws ConcurrentModificationException under multi-threading calls

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 4.0-ALPHA
• Component/s: update

Environment

linux

• Assignee: Unassigned
• Reporter: Ethan Tao
• Created: 23/May/12 23:51
• Updated: 06/Jun/12 20:43
• Resolved: 24/May/12 21:42

Description

Using the LogUpdateProcessor in a singleton chain for concurrent processing throws exception. The issue has been reported in SOLR-2694 (closed), and an unoffical patch can be found in related bug-id SOLR-2804 patch dated 1/1/12.

If the patch won't become official for LogUpdateProcessor, suggested to have new class "ConcurrentLogUpdateProcessorFactory" to address the thread safe issue.

Issue Links

• relates to: SOLR-2804 Logging error causes entire DIH process to fail
• relates to: SOLR-2694 LogUpdateProcessor not thread safe