IV44166: FILECHANNEL.TRANSFERTO() OR FILECHANNEL.TRANSFERFROM() FAILS WIT H IOEXCEPTION ON AIX PLATFORM

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: Caused by: java.io.IOException: Invalid argument
  
  at sun.nio.ch.FileChannelImpl.map0(Native Method)
  at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:746)
  at
  sun.nio.ch.FileChannelImpl.transferToTrustedChannel(FileChannelI
  mpl.java:440)
  at
  sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:513)
  .
  

Local fix

Problem summary

• When a file, which is on a CIFS (Common Internet File System)
  mount on AIX system, is transferred to another file using
  FileChannel.transferTo() or FileChannelImpl.transferFrom()
  functions, they fail with 'Invalid argument'. These functions
  used the memory mapping for transferring the file and AIX has a
  documented limitation while doing mmap() on CIFS mounted files.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR15
  6.0.1 SR7
  7.0.0 SR6
  .
   The JDK has been updated to fall back to the sequential file
  transfer by reading the source file and writing to the
  destination file sequentially when mmap() fails
  

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

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R600 PSY

     UP

• R700 PSY

     UP