APAR status
Closed as program error.
Error description
Asynchronous replication does not update enough data on each replicating cycle when grids contain a large number of maps. While under continuous load, the replica cannot stay current.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of WebSphere eXtreme Scale who have * * several maps in their data grids and use * * asynchronous replication. * **************************************************************** * PROBLEM DESCRIPTION: Asynchronous replication can fall * * behind when the primary is under load. * **************************************************************** * RECOMMENDATION: * **************************************************************** When looking at the revisions information for a primary and replica, the replica can fall behind even though the primary is able to stay current with a large load. When many maps exist, the replication code is conservative so as not to go out of memory when replicating. Therefore, the replication packets sent to the replica can be smaller.
Problem conclusion
The code was updated to make sure that more data is sent during each replication cycle.
Temporary fix
Comments
APAR Information
APAR number
PM56174
Reported component name
XD EXTREME SCAL
Reported component ID
5724J3402
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-01-17
Closed date
2012-02-01
Last modified date
2012-02-01
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
XD EXTREME SCAL
Fixed component ID
5724J3402
Applicable component levels
R710 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":"710","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
23 September 2020