APAR status
Closed as program error.
Error description
After a network brownout recovers, the routetable contains unreachable or entries pointing. The routetable entries that are unreachable match the locations of shards on servers that were stopped or restarted during brownout recovery.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: WebSphere eXtreme Scale or WebSphere * * DataPower * * XC10 Appliance users who experience a * * network * * brownout (a temporary network failure * * lasting * * longer than 30 seconds or the configured * * failover detection time). * **************************************************************** * PROBLEM DESCRIPTION: After a network bronwn out recovers, * * the * * routetable contains unreachable * * entries * **************************************************************** * RECOMMENDATION: * **************************************************************** After a network brownout recovers, the routetable contains unreachable or entries pointing. The routetable entries that are unreachable match the locations of shards on servers that were stopped or restarted during brownout recovery. This can happen if a catalog server is isolated with a group of containers and does some shard movement while islanded, incremented the placement work ID for their grids. If the group rejoins the domain or collective, the containers can push their route table entries to the catalog servers. If the same containers are then restarted to recover from the brownout, then bad route table entries can be left in the route table and new routes temporarily rejected because they appear to be stale or old.
Problem conclusion
The route table processing double checks if potentially stale route entries are actually valid (match the current placement plan). This allows "bad" routes from a network brownout failure be overridden.
Temporary fix
Comments
APAR Information
APAR number
PI56154
Reported component name
WS EXTREME SCAL
Reported component ID
5724X6702
Reported release
860
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-01-29
Closed date
2016-03-03
Last modified date
2016-03-03
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
R860 PSY
UP
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Document Information
Modified date:
03 March 2016