[LUCENE-882] Spellchecker doesn't need to store ngrams

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Component/s: core/other
• Lucene Fields: New, Patch Available
• Assignee: Unassigned
• Reporter: Daniel Naber
• Created: 17/May/07 21:00
• Updated: 28/Aug/22 11:37
• Resolved: 19/May/07 11:09

Description

The spellchecker in contrib stores the ngrams although this doesn't seem to be necessary. This patch changes that, I will commit it unless someone objects. This improves indexing speed and index size. Some numbers on a small test I did:

Input of the original index: 2200 text files, index size 5.3 MB, indexing took 17 seconds

Spell index before patch: about 60.000 documents, index size 13 MB, indexing took 62 seconds
Spell index after patch: about 60.000 documents, index size 6.3 MB, indexing took 52 seconds

BTW, the test case fails even before this patch. I'll probaby submit another issue about how to fix that.