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IV27404: URLCLASSLOADER.CLOSE() DOES NOT CLOSE ALL THE HANDLES IT OPENS

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APAR status

  • Closed as program error.

Error description

  • Error Message: Deleting the jar file, after the Closing the
    URLClassloader fails, with file in use.
    Test snippet:
    URLClassLoader cl = new URLClassLoader(..f.toURI().toURL().);
      cl.getResource("...");
      cl.close();
      System.out.println("delete = " + f.delete()); => This fails
    with file in use
    .
    Stack Trace: N/A
    .
    N/A
    

Local fix

  • Can use one of these workarounds
    1. Either Use getResourceasStream() instead of getresource..
    2. Or Close the connection by
    for (URL u : cl.getURLs()) {
                            if (u.getProtocol().equals("jar")) {
    
    ((JarURLConnection)u.openConnection()).getJarFile().close();
                            }
                          }
    

Problem summary

  • Closeables does not handle closing of all the open handles for
    getresource.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0
    .
    Closeables for URLClassloader is updated to handle this
    scenario.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV27404

  • Reported component name

    JAVA CLASS LIBS

  • Reported component ID

    620700130

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-03

  • Closed date

    2012-09-17

  • Last modified date

    2012-09-17

  • 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

  • R700 PSY

       UP

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Document Information

Modified date:
21 February 2022