APAR status
Closed as program error.
Error description
In an eXtreme Scale deployment that uses many partitions, LockTimeoutException exceptions might occur in the OSGiGridAccessor.reportRanking() method. These exceptions occur during partition startup, either when a contain fails over or during the initial start of the container.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of WebSphere eXtreme Scale with * * applications that use OSGi services * * that implement container server-side * * plug-ins in the object grid configuration. * **************************************************************** * PROBLEM DESCRIPTION: A large grid environment with a * * hundred or more partitions might * * experience LockTimeoutExceptions * * during start-up processing. * **************************************************************** * RECOMMENDATION: * **************************************************************** During retrieval and storage of metadata that is associated with OSGi ranking information for OSGi service, the OSGiGridAccessor.reportRanking() method uses the getForUpdate() method to acquire a lock when the lock is not required. Then, an update operation does not occur. Also, the OSGiGridAccessor.reportRanking() method does not retry in the event of transient network issues or exceptions.
Problem conclusion
The OSGiGridAccessor.reportRanking() method was modified to use an appropriate level of locking and retry attempts when transient error conditions occur.
Temporary fix
Comments
APAR Information
APAR number
PM83566
Reported component name
WS EXTREME SCAL
Reported component ID
5724X6702
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-02-25
Closed date
2013-02-28
Last modified date
2013-02-28
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
WS EXTREME SCAL
Fixed component ID
5724X6702
Applicable component levels
R850 PSY
UP
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Document Information
Modified date:
28 February 2013