Re: Getting Exception : java.nio.channels.ClosedByInterruptException

[Robert Muir <rc...@gmail.com>]

Some code interrupted (Thread.interrupt) a java thread while it was
blocked on I/O. This is not safe to do with lucene, because
unfortunately in this situation java's NIO code closes file
descriptors and releases locks.

The second exception is because the indexwriter tried to write when it
no longer actually held the lock.

See the "NOTE" at the beginning of NIOFSDirectory and MMapDirectory's
javadocs for more information:
https://lucene.apache.org/core/7_4_0/core/org/apache/lucene/store/NIOFSDirectory.html

On Sun, Mar 31, 2019 at 3:04 PM Chellasamy G
<ch...@zohocorp.com.invalid> wrote:
>
> Hi All,
>
>
>
> I am committing an index periodically using a scheduler. On a rare case I got the below exception in the committing thread,
>
>
>
> Lucene Version : 7.4.0
>
>
>
> java.nio.channels.ClosedByInterruptException
>
> at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)
>
> at sun.nio.ch.FileChannelImpl.size(FileChannelImpl.java:314)
>
> at org.apache.lucene.store.NativeFSLockFactory$NativeFSLock.ensureValid(NativeFSLockFactory.java:182)
>
> at org.apache.lucene.store.LockValidatingDirectoryWrapper.sync(LockValidatingDirectoryWrapper.java:67)
>
> at org.apache.lucene.index.SegmentInfos.write(SegmentInfos.java:466)
>
> at org.apache.lucene.index.SegmentInfos.prepareCommit(SegmentInfos.java:772)
>
> at org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4739)
>
> at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:3281)
>
> at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:3449)
>
> at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:3414)
>
>
>
>
>
>
>
> After this exception I am getting the below exception subsequently while trying to commit the index,
>
>
>
>
>
> org.apache.lucene.store.AlreadyClosedException: FileLock invalidated by an external force: NativeFSLock(path=C:\luc-index\write.lock,impl=sun.nio.ch.FileLockImpl[0:9223372036854775807 exclusive invalid],creationTime=2019-03-29T10:40:15.601535Z)
>
> at org.apache.lucene.store.NativeFSLockFactory$NativeFSLock.ensureValid(NativeFSLockFactory.java:178)
>
> at org.apache.lucene.store.LockValidatingDirectoryWrapper.syncMetaData(LockValidatingDirectoryWrapper.java:61)
>
> at org.apache.lucene.index.SegmentInfos.prepareCommit(SegmentInfos.java:771)
>
> at org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4739)
>
> at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:3281)
>
> at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:3449)
>
> at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:3414)
>
>
>
>
>
> Has anybody faced this exception before and know the root cause of this issue?
>
>
>
>
>
> Thanks in Advance,
>
> Satyan

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