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https://issues.apache.org/jira/browse/LUCENE-5058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683344#comment-13683344
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Christian commented on LUCENE-5058:
-----------------------------------
There is no virus scanner and the lock is not held by explorer but by the java
process.
What do you mean with "this is not a problem"? Does this IOException affect the
functionality of the index in any way?
> IOException when trying to delete data from index
> -------------------------------------------------
>
> Key: LUCENE-5058
> URL: https://issues.apache.org/jira/browse/LUCENE-5058
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.3
> Environment: Windows 7
> Reporter: Christian
>
> I have a small test prog which inserts some data in an index and after that,
> opens a searcher from the uncommitted index to search on and output the
> result to std.out. The Searcher is immediately closed. Then, i call
> deleteAll() on the index but it encounters an IOException stating that the
> index files could not be removed. I have investigated with Sysinternals and
> it says the file is still locked despite the fact that the index searcher is
> correctly closed. If i call deleteAll() without opening a searcher before it
> just works fine as expected. This seems to be a bug in Lucene, since closing
> the index searcher makes it impossible to delete the index.
> Here is the source code:
> {code:title=Bar.java|borderStyle=solid}
> public class LuceneTest {
> private Directory dir;
> private IndexWriter writer;
>
> public void addDocs(long value) throws IOException {
> Document doc = new Document();
> doc.add(new LongField("ID", value, Field.Store.YES));
> writer.deleteDocuments(new Term("ID", "1"));
> writer.addDocument(doc);
> }
>
> public void search() throws IOException {
> IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(writer,
> false));
> TopDocs results =
> searcher.search(NumericRangeQuery.newLongRange("ID", 1L, 2L, true, true), 1);
>
> for ( ScoreDoc sc : results.scoreDocs) {
> System.out.println(searcher.doc(sc.doc));
> }
>
> searcher.getIndexReader().close();
> }
> public static void main(String[] args) throws IOException {
> new LuceneTest();
> }
>
> public LuceneTest() throws IOException {
> dir = FSDirectory.open(new File("test"));
> IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43,
> new StandardAnalyzer(Version.LUCENE_43));
> config.setInfoStream(System.out);
> writer = new IndexWriter(dir, config);
>
> addDocs(1L);
> search();
> //writer.commit(); -- If i call commit after search, then no
> IOException occurrs!
>
> writer.deleteAll();
> }
> }
> {code}
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