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From Simon Willnauer <simon.willna...@googlemail.com>
Subject Re: NIOFSDirectory and Thread.interrupt
Date Sun, 16 Oct 2011 11:30:14 GMT
Are you using an ExecutorService somewhere or do  you call
Future#cancel() ? Somehow the streams must have been closed in your
application due to an interrupt though. can you explain more what you
are doing and give some details about the execution environment?

simon

On Sun, Oct 16, 2011 at 12:32 PM, Grzegorz Tańczyk <goliatus@polzone.pl> wrote:
> Hello,
>
> I had some problem with this issue:
> https://issues.apache.org/jira/browse/LUCENE-2239
>
> I was getting ClosedByInterruptException even though my application was not
> calling Thread.interrupt() anywhere.
>
> There were 2 scenarios of getting this exception:
>
> class MyThread extends Thread {
>   public void run() {
>     // ...
>       update();
>   }
>   private void update() {
>        // some loop
>            otherclass.getIndexWriter().addDocument(doc);
>      otherclass.getIndexWriter().commit(); // <- ClosedByInterruptException
> here
>   }
> }
>
> java.nio.channels.ClosedByInterruptException
>        at
> java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:184)
>        at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:630)
>        at
> org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.readInternal(NIOFSDirectory.java:161)
>        at
> org.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.java:139)
>        at
> org.apache.lucene.index.CompoundFileReader$CSIndexInput.readInternal(CompoundFileReader.java:272)
>        at
> org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:213)
>        at
> org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:39)
>        at org.apache.lucene.store.DataInput.readVInt(DataInput.java:105)
>        at
> org.apache.lucene.store.BufferedIndexInput.readVInt(BufferedIndexInput.java:181)
>        at org.apache.lucene.index.TermBuffer.read(TermBuffer.java:64)
>        at
> org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:131)
>        at
> org.apache.lucene.index.SegmentTermEnum.scanTo(SegmentTermEnum.java:166)
>        at
> org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:273)
>        at
> org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:209)
>        at
> org.apache.lucene.index.SegmentTermDocs.seek(SegmentTermDocs.java:57)
>        at
> org.apache.lucene.index.BufferedDeletesStream.applyTermDeletes(BufferedDeletesStream.java:351)
>        at
> org.apache.lucene.index.BufferedDeletesStream.applyDeletes(BufferedDeletesStream.java:253)
>        at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3571)
>        at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:3508)
>        at
> org.apache.lucene.index.IndexWriter.prepareCommit(IndexWriter.java:3371)
>        at
> org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:3444)
>        at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:3426)
>        at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:3410)
>        at MyThread.update(MyThread.java:182)
>        at MyThread.run(MyThread.java:42)
>
>
>
> First try to find some workarund was by moving IndexWriter.commit call
> somewhere before last line and it worked, ClosedByInterruptException was not
> thrown anymore, however ClosedChannelException was thrown in other thread
> when using IndexSearcher(NRT) after mythread ended normally(without
> interrupt). I also tried to put some Thread.sleep() on end of run(), but
> still it didn't help.
> Finally i solved the problem by making mythread reusable. This is not
> perfect solution for me, but for now it's working.
>
> On note which may be important: MyThread is loaded using URLClassLoader
>
> Conclusion is that you can't access NIOFSDirectory in thread which will end
> normally or by interrupt. It happened in 3.3.0.
>
> Thanks
>
> --
> Regards
>
>
>
>
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