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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » java.nio.channels.OverlappingFileLockException for FileInput

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ghoshly
PostPosted: Tue Mar 19, 2019 1:33 pm    Post subject: java.nio.channels.OverlappingFileLockException for FileInput Reply with quote

Partisan

Joined: 10 Jan 2008
Posts: 333
Hello,

I am trying to read some Flat file using IIB v100010 File Input node and though most of the time its working correctly, we are rarely getting java.nio.channels.OverlappingFileLockException and the file is stuck in mqsitransitin directory with UUID of the integration server.

Though IIB is running on AIX v7.1, the file is originating from Windows and the shared location is NFSv3. Mentioned below is taken from syslog during the error. We do not have any other File Input node reading from the same directory, though we have few additional instances of the same flow running there.
Quote:
BIP4367E: The method 'readData' in Java node 'File_Receiver_Input' has thrown the following exception: java.nio.channels.OverlappingFileLockException.

Quote:
BIP4395E: Java exception: 'java.nio.channels.OverlappingFileLockException'; thrown from class name: 'sun.nio.ch.SharedFileLockTable', method name: 'checkList', file: 'FileLockTable.java', line: '268'


Other than taking it to NFS v4 File system to get robust File locking, is there anything else I can do? We are planning for fix pack upgrade to latest level.
Should I limit the flow to run without any additional instances?

Any suggestion / remediation for the issue is welcome.
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