Hi -
I just tried MMapDirectory on windows, running the app I use to
populate my index, and it fairly quickly dies. Does it work for
anyone? Same code works fine with FSDirectory on Windows, or on Linux with MM.
I get:
[java] Constructing lucene index in ./test_repos
[java] Canon: C:\Documents and
Settings\Tom\workspace\LuceneWar\test_repos
[java] Using dir of class: org.apache.lucene.store.MMapDirectory
[java] Inserted 8 users in: 47 millis
[java] Exception in thread "main" java.io.IOException: Cannot
delete C:\Documents and Settings\Tom\workspace\LuceneWar\test_repos\deletable
[java] at
org.apache.lucene.store.FSDirectory.renameFile(FSDirectory.java:265)
[java] at
org.apache.lucene.index.IndexWriter.writeDeleteableFiles(IndexWriter.java:797)
[java] at
org.apache.lucene.index.IndexWriter.deleteSegments(IndexWriter.java:741)
[java] at
org.apache.lucene.index.IndexWriter.access$200(IndexWriter.java:59)
[java] at
org.apache.lucene.index.IndexWriter$4.doBody(IndexWriter.java:699)
[java] at org.apache.lucene.store.Lock$With.run(Lock.java:109)
[java] at
org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:696)
[java] at
org.apache.lucene.index.IndexWriter.mergeSegments(IndexWriter.java:658)
[java] at
org.apache.lucene.index.IndexWriter.maybeMergeSegments(IndexWriter.java:646)
[java] at
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:453)
[java] at
org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:436)
...
Just as a guess, it's a manifestation of a bug in java
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4715154, where
they don't unmap the file.
There's mention of a workaround here, FWIW.
http://bugs.sun.com/bugdatabase/view_bug.do;jsessionid=24ab5731b5fe7756d054f6bc7b921:WuuT?bug_id=4829325
Tom
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