APAR status
Closed as program error.
Error description
Error Message: NullPointerException thrown in a select() call while deregistering the canceled keys. . Stack Trace: java.lang.NullPointerException Throwable occurred: java.lang.NullPointerException at sun.nio.ch.WindowsSelectorImpl$FdMap.remove(WindowsSelectorImpl. java:111) at sun.nio.ch.WindowsSelectorImpl$FdMap.access$3100(WindowsSelector Impl.java:80) at sun.nio.ch.WindowsSelectorImpl.implDereg(WindowsSelectorImpl.jav a:593) at sun.nio.ch.SelectorImpl.processDeregisterQueue(SelectorImpl.java :149) at sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java :168) at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:81) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:92) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:96) .
Local fix
Problem summary
When a channel is closed, the key will be removed from internal data structures of that selector and channel will be closed. If any exception happens while closing the channel, the control goes back to selector.select() call. Since the key remains in canceled list, key is removed from selector. A key which is no longer part of selector.
Problem conclusion
This defect will be fixed in: 6.0.0 SR11 7.0.0 SR3 6.0.1 SR3 . JVM code is modified to fix the NullPointerException.
Temporary fix
Comments
APAR Information
APAR number
IV19693
Reported component name
JAVA CLASS LIBS
Reported component ID
620700130
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-04-13
Closed date
2012-05-04
Last modified date
2012-11-11
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
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Document Information
Modified date:
11 November 2012