PI87954: HUNG THREAD ISSUE IN MYFACES GETPROPERTYDESCRIPTOR

Fixes are available

APAR status

Closed as program error.

Error description

When using MyFaces JSF implementation, a hang issue may occur.
Hung threads show the following callstack:

at
java/util/Collections$SynchronizedMap.get(Collections.java:204
9(Compiled Code))
at
java/util/Collections$SynchronizedMap.get(Collections.java:204
9(Compiled Code))
at
javax/faces/component/_ComponentAttributesMap.getPropertyDescrip
tor(_ComponentAttributesMap.java:394(Compiled Code))
at
javax/faces/component/_ComponentAttributesMap.containsKey(_Compo
nentAttributesMap.java:165(Compiled Code))
at
javax/faces/component/UIComponent.isCompositeComponent(UICompone
nt.java:239(Compiled Code))

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server versions   *
*                  8.0, 8.5.5, 9.0 and WebSphere Liberty       *
*                  users of JavaServer Faces (JSF) MyFaces     *
*                  2.0 and 2.2                                 *
****************************************************************
* PROBLEM DESCRIPTION: Concurrency-related performance issue   *
*                      in                                      *
*                      _ComponentAttributesMap.getPropertyDesc *
*                      riptor                                  *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
With highly concurrent workloads, a performance issue can be
exposed in _ComponentAttributesMap.getPropertyDescriptor().
Hung threads may be observed with a similar callstack:
...
(entered lock:
java/util/Collections$SynchronizedMap@0x000000000000000, entry
count:1)
at
javax/faces/component/_ComponentAttributesMap.getPropertyDescrip
tor(_ComponentAttributesMap.java:394(Compiled Code))
at
javax/faces/component/_ComponentAttributesMap.containsKey(_Compo
nentAttributesMap.java:165(Compiled Code))
at
javax/faces/component/UIComponent.isCompositeComponent(UICompone
nt.java:239(Compiled Code))
...

Problem conclusion

The JSF MyFaces 2.0 and 2.2 code was updated with improved
performance for this scenario.
For additional information, please see
https://issues.apache.org/jira/browse/MYFACES-4186

The fix for this APAR is currently targeted for inclusion in
fix packs 8.0.0.15, 8.5.5.14, and 9.0.0.7 for WebSphere
Application Server,
and 18.0.0.1 for WebSphere Liberty. Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PI87954
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-09-26
Closed date
2018-01-16
Last modified date
2018-01-16

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
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R800 PSY
UP
R850 PSY
UP
R900 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI87954: HUNG THREAD ISSUE IN MYFACES GETPROPERTYDESCRIPTOR

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R800 PSY

R850 PSY

R900 PSY

Document Information

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