[SOLR-4951] randomize merge policy testing in solr

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.5, 6.0
• Assignee: Chris M. Hostetter
• Reporter: Chris M. Hostetter
• Created: 21/Jun/13 23:30
• Updated: 09/May/16 18:49
• Resolved: 30/Jul/13 17:53

Description

split off from SOLR-4942...

• add a new RandomMergePolicy that implements MergePolicy by proxying to another instance selected at creation using one of the LuceneTestCase.new...MergePolicy methods
• updated test configs to refer to this new MergePolicy
• borrow the "tests.shardhandler.randomSeed" logic in SolrTestCaseJ4 to give our RandomMergePolicy a consistent seed at runtime.