IV22075: PERFORMANCE IS SLOW FOR TRANSFORMATIONS WHERE THE RESULT IS A DO MRESULT WITH THE NODE UNSET.

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: Stack trace showing the performance hot spot:
            at java.io.File.exists(File.java:739)
            at
    sun.misc.URLClassPath$FileLoader.getResource(URLClassPath.java:1
    219)
            at
    sun.misc.URLClassPath$FileLoader.findResource(URLClassPath.java:
    1186)
            at
    sun.misc.URLClassPath.findResource(URLClassPath.java:250)
            at
    java.net.URLClassLoader$4.run(URLClassLoader.java:752)
            at
    java.security.AccessController.doPrivileged(AccessController.jav
    a:224)
            at
    java.net.URLClassLoader.findResource(URLClassLoader.java:749)
            at
    java.lang.ClassLoader.getResource(ClassLoader.java:444)
            at
    java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:511)
            at
    java.lang.ClassLoader.getSystemResourceAsStream(ClassLoader.java
    :611)
            at javax.xml.parsers.SecuritySupport$4.run(Unknown
    Source)
            at
    java.security.AccessController.doPrivileged(AccessController.jav
    a:202)
            at
    javax.xml.parsers.SecuritySupport.getResourceAsStream(Unknown
    Source)
            at
    javax.xml.parsers.FactoryFinder.findJarServiceProvider(Unknown
    Source)
            at javax.xml.parsers.FactoryFinder.find(Unknown Source)
            at
    javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown
    Source)
            at com.ibm.xtq.xslt.runtime.DOMBuilder.<init>(Unknown
    Source)
            at
    com.ibm.xtq.xslt.runtime.ConverterImpl.getInputSerializationHand
    ler(Unknown Source)
            at
    com.ibm.xtq.xslt.runtime.output.TransletOutputHandlerFactory.get
    SerializationHandler(Unknown Source)
            at
    com.ibm.xtq.xslt.jaxp.TransformerImpl.getOutputHandler(Unknown
    Source)
            at
    com.ibm.xtq.xslt.jaxp.TransformerHandlerImpl.setResult(Unknown
    Source)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.DomLoader$Stat
    e.<init>(DomLoader.java:63)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.DomLoader.star
    tElement(DomLoader.java:102)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.ProxyLoader.st
    artElement(ProxyLoader.java:44)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingC
    ontext._startElement(UnmarshallingContext.java:487)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingC
    ontext.startElement(UnmarshallingContext.java:465)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConn
    ector.handleStartElement(StAXStreamConnector.java:240)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.StAXStreamConn
    ector.bridge(StAXStreamConnector.java:174)
            at
    com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerIm
    pl.unmarshal0(UnmarshallerImpl.java:358)
            at
    com.sun.xml.internal.bind.v2.runtime.BridgeImpl.unmarshal(Bridge
    Impl.java:109)
            at
    com.sun.xml.internal.bind.api.Bridge.unmarshal(Bridge.java:222)
            at
    com.sun.xml.internal.ws.client.sei.ResponseBuilder$DocLit.readRe
    sponse(ResponseBuilder.java:514)
            at
    com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Sync
    MethodHandler.java:110)
            at
    com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Sync
    MethodHandler.java:78)
            at
    com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:1
    07)
    .
    

Local fix

  • The customer can set the following system properties:
    
    -Djavax.xml.parsers.DocumentBuilderFactory=org.apache.xerces.jax
    p.DocumentBuilderFactoryImpl
    
    -Dorg.apache.xerces.xni.parser.XMLParserConfiguration=org.apache
    .xerces.parsers.XIncludeAwareParserConfiguration
    

Problem summary

  • The code was creating a new DocumentBuilder object for each
    transformation where the result was a DOMResult with the node
    unset.  Creating DocumentBuilder objects is expensive.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR11
    7.0.0 SR2
    6.0.1 SR3
    .
    The code was modified to cache a DocumentBuilder object and
    reuse it.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV22075

  • Reported component name

    XML/XSL

  • Reported component ID

    620700126

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-04

  • Closed date

    2012-06-18

  • Last modified date

    2012-06-18

  • 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

    XML/XSL

  • Fixed component ID

    620700126

Applicable component levels

  • R600 PSY

       UP

  • R700 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
XML

Software version:

6.0

Reference #:

IV22075

Modified date:

2012-06-18

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