[LUCENE-4847] Sorter API: Fully reuse docs enums

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.3
• Lucene Fields: New
• Assignee: Adrien Grand
• Reporter: Adrien Grand
• Created: 17/Mar/13 23:15
• Updated: 28/Aug/22 13:41
• Resolved: 20/Mar/13 20:14

Description

SortingAtomicReader reuses the filtered docs enums but not the wrapper. In the case of SortingAtomicReader this can be a problem because the wrappers are heavyweight (they load the whole postings list into memory), so an index with many terms with high freqs will make the JVM allocate a lot of memory when browsing the postings lists.

Issue Links

• is related to: LUCENE-3918 Port index sorter to trunk APIs