IV51176: FILEDESCRIPTOR LEAK IN PRINTSERVICELOOKUP ON AIX PLATFORM

APAR status

• Closed as program error.

Error description

• Error Message: The application fail with "Too many open files"
  .
  Stack Trace: N/A
  .
  As time progress, the number of  open files  increases
  proportionally and all the file descriptors get exhausted . The
  command " lsof -T" shows many FIFO file types  & temp files in
  open state.
  java      376904   root  526r  VREG               10,7
        10   21439 /tmp (/dev/hd3)
  java      376904   root  527r  FIFO 0xf10001002dc10f70
         0
  java      376904   root  528w  FIFO 0xf10001002dc2b190
         0
  java      376904   root  529r  FIFO 0xf10001002dc2b7f0
         0
  java      376904   root  530r  VREG               10,7
        16   21440 /tmp (/dev/hd3)
  java      376904   root  531r  FIFO 0xf10001002dc2b0d0
         0
  java      376904   root  532w  FIFO 0xf10001002dc2b910
         0
  java      376904   root  533r  FIFO 0xf10001002dc2b8b0
         0
  

Local fix

• N/A
  

Problem summary

• The Java API PrintServiceLookup create temporary files and
  invoke Runtime.exec. The File reader opened to read the
  temporary files result in the creation of  VREG  file
  descriptors. The  InputStream, ErrorStream and OutputStream
  opened to read the output from the process of Runtime.exec
  result in the creation of  FIFO file descriptors. The streams
  were not properly closed after completing the read/write
  operation which resulted in the file descriptor leak.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR16
  6.0.1 SR8
  7.0.0 SR7
  .
  The JDK has been updated to properly close the streams after
  completing the read/write operation for PrintServiceLookup.
  

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