IT26659: SFTP FILE OUTPUT NODE WILL ROLLBACK MSG IF REMOTE SERVER CLOSES CONNECTION AFTER TRANSFER IS COMPLETED BUT BEFORE FILE IS CLOSED

APAR status

• Closed as program error.

Error description

• When usinge the FileOutput node to transfer data over SFTP, it
  is possible that the message flow may be rolled back despite the
  file having been transferred successfully.
  .
  This can happen if the remote host closes the connection after
  the file transfer has finished but before the file handle is
  closed.
  .
  This error is indicated by the following service trace entry:
  .
  ==========================APAR=64Col============================
  SFTPService.putStream '4: java.io.IOException: inputstream is
  closed at com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:697)
     at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:540)
     at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:492)
     at com.ibm.broker.remote.sftp.SFTPService.putStream(SFTPServi
     ce.java:589)
     at com.ibm.broker.nodes.filenodes.AbstractFileOutputNode.tran
     sferToRemoteServer(AbstractFileOutputNode.java:785)
     at com.ibm.broker.nodes.filenodes.AbstractFileOutputNode.proc
     essEOD(AbstractFileOutputNode.java:1141)
     at com.ibm.broker.nodes.filenodes.AbstractFileOutputNode.send
     Data(AbstractFileOutputNode.java:350)
     at com.ibm.broker.nodes.filenodes.ComIbmFileOutputNode.send
     Data(ComIbmFileOutputNode.java:426)
     at com.ibm.broker.plugin.MbOutputTemplateNode.sendData(MbOut
     putTemplateNode.java:53)
   Caused by: java.io.IOException: inputstream is closed at com.jc
     raft.jsch.ChannelSftp.fill(ChannelSftp.java:2911)
     at com.jcraft.jsch.ChannelSftp.header(ChannelSftp.java:2935)
     at com.jcraft.jsch.ChannelSftp.checkStatus(ChannelSftp.java:
     2473)
     at com.jcraft.jsch.ChannelSftp._sendCLOSE(ChannelSftp.java:
     2492)
     at com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:692)
     ... 8 more '
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM Integration Bus v10 and IBM App Connect
  Enterprise v11 using the FileOutput Node to transfer files using
  SFTP.
  
  
  Platforms affected:
  z/OS, MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When using the FileOutput node in SFTP mode, it is possible for
  a Java exception to occur and roll back the flow despite having
  successfully transferred the file. This can happen when the
  remote server unexpectedly closes the SFTP connection after the
  file has been sent.
  

Problem conclusion

• The FileOutput node will now ignore such Java exceptions once
  the file has been successfully transferred.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.15
  v11.0      11.0.0.4
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• 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

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels