APAR status
Closed as program error.
Error description
A Managed File Transfer (MFT) protocol bridge agent (PBA) is connecting to a file server using the SFTP protocol and acting as the source agent for a managed transfer. When querying the size of the source file, the file server returns a value of -1. This results in an java.lang.IndexOutOfBoundsException being created, which causes the agent to shut down and generate an ABEND file containing a stack similar to the following: Thread: 30 (FileIOWorker-0:0) Class: com.ibm.wmqfte.thread.FTEThread Instance: 6565fd2b Method: uncaughtException Probe: ABEND_001 Cause: java.lang.IndexOutOfBoundsException java.lang.IndexOutOfBoundsException at java.nio.ByteBuffer.wrap(ByteBuffer.java:375) at com.ibm.wmqfte.transfer.frame.impl.TransferChunkImpl.getByteBuff er(TransferChunkImpl.java:192) at com.ibm.wmqfte.transfer.frame.impl.TransferChunkImpl.createFileS lice(TransferChunkImpl.java:346) at com.ibm.wmqfte.io.bridge.BridgeFileChannelImpl.newSlice(BridgeFi leChannelImpl.java:1137) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl.reque stChunk(TransferFrameSenderImpl.java:692) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl.acces s$000(TransferFrameSenderImpl.java:104) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl$Chunk Requester.processFileIORequest(TransferFrameSenderImpl.java:146) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameIOWorker.doWorkI mpl(TransferFrameIOWorker.java:318) at com.ibm.wmqfte.io.impl.FTEFileIOWorker.doWork(FTEFileIOWorker.ja va:118) at com.ibm.wmqfte.io.impl.FTEFileIORequestQueue.run(FTEFileIOReques tQueue.java:274) at java.lang.Thread.run(Thread.java:825) at com.ibm.wmqfte.thread.FTEThread.run(FTEThread.java:70) Restarting the agent may cause it to resume the transfer and encounter the same issue, resulting in it shutting down again.
Local fix
If you can identify the transfer ID of the transfer causing the exception, you can cancel it using the fteCancelTransfer command. This may allow the agent to stay active.
Problem summary
**************************************************************** USERS AFFECTED: This issue affects users of MQ Managed File Transfer (MFT), who have protocol bridge agents (PBA) that act as the source agent for managed transfers. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: When an MQ Managed File Transfer (MFT) protocol bridge agent (PBA) is acting as the source agent for a managed transfer, it will send a request to the remote file server to get various attributes about the file it has been asked to transfer. It then uses the file size attribute to determine how much data it needs to read from the remote file server. If the file server returned a file size of -1,. then the agent would try to create an internal buffer with a size of -1 to store the file data. This attempt would result in an java.lang.IndexOutOfBoundsException being thrown, which caused the agent to generate an ABEND file containing information similar to the example shown below: Thread: 30 (FileIOWorker-0:0) Class: com.ibm.wmqfte.thread.FTEThread Instance: 6565fd2b Method: uncaughtException Probe: ABEND_001 Cause: java.lang.IndexOutOfBoundsException java.lang.IndexOutOfBoundsException at java.nio.ByteBuffer.wrap(ByteBuffer.java:375) at com.ibm.wmqfte.transfer.frame.impl.TransferChunkImpl.getByteBuff er(TransferChunkImpl.java:192) at com.ibm.wmqfte.transfer.frame.impl.TransferChunkImpl.createFileS lice(TransferChunkImpl.java:346) at com.ibm.wmqfte.io.bridge.BridgeFileChannelImpl.newSlice(BridgeFi leChannelImpl.java:1137) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl.reque stChunk(TransferFrameSenderImpl.java:692) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl.acces s$000(TransferFrameSenderImpl.java:104) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameSenderImpl$Chunk Requester.processFileIORequest(TransferFrameSenderImpl.java:146) at com.ibm.wmqfte.transfer.frame.impl.TransferFrameIOWorker.doWorkI mpl(TransferFrameIOWorker.java:318) at com.ibm.wmqfte.io.impl.FTEFileIOWorker.doWork(FTEFileIOWorker.ja va:118) at com.ibm.wmqfte.io.impl.FTEFileIORequestQueue.run(FTEFileIOReques tQueue.java:274) at java.lang.Thread.run(Thread.java:825) at com.ibm.wmqfte.thread.FTEThread.run(FTEThread.java:70) The agent would then shut itself down.
Problem conclusion
To resolve this issue, MQ Managed File Transfer (MFT protocol bridge agents (PBA) have been changed to fail a managed transfer if the remote file server returns a file size less than zero for a source file. The managed transfer will fail with the following error: BFGIO0417E: The file server returned an invalid file size of <file size> for the source file '<source file name>''. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.3 LTS 9.3.0.10 v9.x CD 9.3.4 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT43691
Reported component name
MQ BASE V9.2
Reported component ID
5724H7281
Reported release
924
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2023-05-03
Closed date
2023-05-23
Last modified date
2023-05-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
MQ BASE V9.2
Fixed component ID
5724H7281
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"924","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
24 May 2023