IV55924: 'TOO MANY OPEN FILES' ERROR DUE TO COM.SUN.IMAGEIO.PLUGINS.JPEG.JPEGIMAGEREADER OBJECTS

APAR status

• Closed as program error.

Error description

• Error Message: java.io.IOException: Too many open files
  .
  Stack Trace: 1.java.io.IOException: Too many open files
  at java.io.File.createNewFile(File.java:894)
  <stack trace may vary>
  2.java.net.SocketException: Too many open files
  at java.net.Socket.createImpl(Socket.java:405)
  <stack trace may vary>
  .
  

Local fix

Problem summary

• Problem is caused as
  com.sun.imageio.plugins.jpeg.JPEGImageReader objects are being
  refered through JNI code as JNI global references, causing delay
  in garbage collection of JPEGImageReader objects and hence
  leaking of resources(Memory/File descriptors).
  

Problem conclusion

• This APAR will be fixed in the following Java Releases:
     6 R1 SR8       (6.1.8.0)
     6    SR16      (6.0.16.0)
  .
  To resolve this issue JVM is updated to use weak references to
  JPEGImageReader objects in JNI code.
  

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