[LUCENENET-488] Can't open IndexReader, get OutOFMemory Exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: Lucene.Net 2.9.4g
• Component/s: Lucene.Net Core

Environment

Windows server 2008R2

• Assignee: Unassigned
• Reporter: Steven
• Created: 01/May/12 10:32
• Updated: 30/May/12 15:41
• Resolved: 30/May/12 15:41

Description

Have build a large database with ~1Bn records (2 items per document) it has size 200GB on disk. I managed to write the indexe by chunking into 100,000 blocks as I ended up with some threading issues (another bug submission). Anyway the index is built but I can't open it and get a memory exception (process explorer gets to 1.5GB allocated before it dies but not sure how reliable that is, but do know there is plenty more RAM left on the box).
Stack trace below:

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was
thrown.
at Lucene.Net.Index.TermInfosReader..ctor(Directory dir, String seg, FieldInf
os fis, Int32 readBufferSize, Int32 indexDivisor)
at Lucene.Net.Index.SegmentReader.CoreReaders..ctor(SegmentReader origInstanc
e, Directory dir, SegmentInfo si, Int32 readBufferSize, Int32 termsIndexDivisor)

at Lucene.Net.Index.SegmentReader.Get(Boolean readOnly, Directory dir, Segmen
tInfo si, Int32 readBufferSize, Boolean doOpenStores, Int32 termInfosIndexDiviso
r)
at Lucene.Net.Index.SegmentReader.Get(Boolean readOnly, SegmentInfo si, Int32
termInfosIndexDivisor)
at Lucene.Net.Index.DirectoryReader..ctor(Directory directory, SegmentInfos s
is, IndexDeletionPolicy deletionPolicy, Boolean readOnly, Int32 termInfosIndexDi
visor)
at Lucene.Net.Index.DirectoryReader.<>c_DisplayClass1.<Open>b_0(String segm
entFileName)
at Lucene.Net.Index.SegmentInfos.FindSegmentsFile.Run(IndexCommit commit)
at Lucene.Net.Index.DirectoryReader.Open(Directory directory, IndexDeletionPo
licy deletionPolicy, IndexCommit commit, Boolean readOnly, Int32 termInfosIndexD
ivisor)
at Lucene.Net.Index.IndexReader.Open(String path, Boolean readOnly)
at Lucene.Net.Demo.SearchFiles.Main(String[] args)