APAR status
Closed as program error.
Error description
The replication mechanism has problems scaling.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere eXtreme Scale * **************************************************************** * PROBLEM DESCRIPTION: LockTimeout and TransactionTimeout * * occur with other transactions that * * were waiting on the locks held by the * * long transaction. * **************************************************************** * RECOMMENDATION: * **************************************************************** The replication mechanism used by the catalog servers had an algorithm that did not scale linearly with the size of the data being replicated. This results in exponentially longer commit time in the catalog server as the size of the transactions increase. The transaction time increases for some transactions as the size of the data grid increases by the number of containers or number of partitions.
Problem conclusion
The algorithm was modified to scale linearly.
Temporary fix
Comments
APAR Information
APAR number
PM77187
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
2012-11-15
Closed date
2012-11-29
Last modified date
2012-11-29
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
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSTVLU","label":"WebSphere eXtreme Scale"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
29 November 2012