[jira] [Created] (LUCENE-7582) NIOFSDirectory sometime doesn't work on windows

["Kevin Senechal (JIRA)" <ji...@apache.org>]

Kevin Senechal created LUCENE-7582:
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             Summary: NIOFSDirectory sometime doesn't work on windows
                 Key: LUCENE-7582
                 URL: https://issues.apache.org/jira/browse/LUCENE-7582
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/store
    Affects Versions: 5.3.1
         Environment: Windows 10, 32 bits JVM
            Reporter: Kevin Senechal


Hi!

I've an error using lucene on windows. I already post a question on modeshape forum (https://developer.jboss.org/thread/273070) and it looks that NIOFSDirectory is not working well on windows as described in the java documentation of this class.

{quote}NOTE: NIOFSDirectory is not recommended on Windows because of a bug in how FileChannel.read is implemented in Sun's JRE. Inside of the implementation the position is apparently synchronized. See here for details.{quote}

After reading the linked java issue (http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6265734), it seems that there is a workaround to solve it, use an AsynchronousFileChannel.

Is it a choice that has been made to not use AsynchronousFileChannel or will it be a good fix?

You'll find the complete stacktrace below:
{code:java}
Caused by: org.modeshape.jcr.index.lucene.LuceneIndexException: Cannot commit index writer  
  at org.modeshape.jcr.index.lucene.LuceneIndex.commit(LuceneIndex.java:155) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.spi.index.provider.IndexChangeAdapter.completeWorkspaceChanges(IndexChangeAdapter.java:104) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.cache.change.ChangeSetAdapter.notify(ChangeSetAdapter.java:157) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.spi.index.provider.IndexProvider$AtomicIndex.notify(IndexProvider.java:1493) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.bus.RepositoryChangeBus.notify(RepositoryChangeBus.java:190) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.cache.document.WorkspaceCache.changed(WorkspaceCache.java:333) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.txn.SynchronizedTransactions.updateCache(SynchronizedTransactions.java:223) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.cache.document.WritableSessionCache.save(WritableSessionCache.java:751) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.JcrSession.save(JcrSession.java:1171) ~[dsdk-launcher.jar:na]  
  ... 19 common frames omitted  
Caused by: java.nio.file.FileSystemException: C:\Users\Christopher\Infiltrea3CLOUDTEST8\christopher@dooapp.com\indexes\default\nodesByPath\_dc_Lucene50_0.doc: The process cannot access the file because it is being used by another process.  
  at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:86) ~[na:1.8.0_92]  
  at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97) ~[na:1.8.0_92]  
  at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102) ~[na:1.8.0_92]  
  at sun.nio.fs.WindowsFileSystemProvider.newFileChannel(WindowsFileSystemProvider.java:115) ~[na:1.8.0_92]  
  at java.nio.channels.FileChannel.open(FileChannel.java:287) ~[na:1.8.0_92]  
  at java.nio.channels.FileChannel.open(FileChannel.java:335) ~[na:1.8.0_92]  
  at org.apache.lucene.util.IOUtils.fsync(IOUtils.java:393) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.store.FSDirectory.fsync(FSDirectory.java:281) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.store.FSDirectory.sync(FSDirectory.java:226) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.store.LockValidatingDirectoryWrapper.sync(LockValidatingDirectoryWrapper.java:62) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4456) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2874) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2977) ~[dsdk-launcher.jar:na]  
  at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2944) ~[dsdk-launcher.jar:na]  
  at org.modeshape.jcr.index.lucene.LuceneIndex.commit(LuceneIndex.java:152) ~[dsdk-launcher.jar:na] 
{code}

Thank you in advance for your help



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