[SOLR-2877] SolrInputDocument performance improvements

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4
• Fix Version/s: 3.5
• Component/s: SearchComponents - other
• Labels: SolrInputDocument capacity constructor initial loadfactor performance
• Assignee: Ryan McKinley
• Reporter: Ivan Hrytsyuk
• Created: 04/Nov/11 17:21
• Updated: 27/Nov/11 12:36
• Resolved: 14/Nov/11 21:14

Description

org.apache.solr.common.SolrInputDocument has only single default constructor.
Since it's a LinkedHashMap, it's initialised with default initialCapacity=16 and loadFactor=0.75.
That produces bad performance in situations when your document contains 10000+ different fields.

org.apache.solr.common.SolrInputDocument class needs to have a constructor that allows to specify initialCapacity and loadFactor arguments.