--- On Sat, 1/8/11, Andreas Harth <andr...@harth.org> wrote:
> From: Andreas Harth <andr...@harth.org>
> Subject: Frequent updates lead to "Too many open files"
> To: java-user@lucene.apache.org
> Date: Saturday, January 8, 2011, 6:30 PM
> Hi,
>
> I have a single IndexWriter object which I use to update
> the index. After each update, I'd like to query the
> index
> using IndexReader and IndexSearcher objects.
>
> When I try to do that I get java.io.FileNotFoundException:
> /tmp/lucene/_32.fdx (Too many open files).
>
> lsof -p says that there are many open file handles to the
> same index file name, all but the last with a (deleted)
> marker.
>
> I think I close everything properly.
>
> Here's the code for the test case which reproduces the
> issue:
>
> Directory ldir = new SimpleFSDirectory(new
> File("/tmp/lucene"));
>
> IndexWriter writer = new IndexWriter(ldir, new
> StandardAnalyzer(Version.LUCENE_30),
> IndexWriter.MaxFieldLength.LIMITED);
> IndexReader reader = IndexReader.open(ldir);
>
> IndexSearcher searcher = new IndexSearcher(reader);
>
> for (int i = 0; i < 1000; i++) {
> Document doc = new Document();
> doc.add(new Field("uri", "http://example.org/";, Field.Store.YES,
> Field.Index.NO));
> writer.addDocument(doc);
> writer.commit();
>
> reader.reopen();
> searcher.close();
> searcher = new IndexSearcher(reader);
>
> // do something here
>
> Term term = new Term("uri", "http://example.org/";);
> writer.deleteDocuments(term);
> writer.commit();
> }
>
> Any idea what's going wrong?
Doing commit operation at the end of the loop can solve your problem. It is not
a good idea to commit after every single addition.
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