A fix is available
APAR status
Closed as program error.
Error description
Error Message: There is a performance regression when creating lots of HashMap/Hashtable/WeakHashMap new instances on all platforms. . Stack Trace: N/A . N/A
Local fix
Use previous JDK release which doesn't support alt hashing security fix.
Problem summary
There are 2 new object fields added to HashMap/Hashtable/WeakHashMap, one field will call some expensive method to initialize, even alt hashing is disabled.
Problem conclusion
This defect will be fixed in: 6.0.0 SR12 6.0.1 SR4 7.0.0 SR3 . The solution is to not call the expensive method when initializing the field if alt hashing is disabled.
Temporary fix
N/A
Comments
APAR Information
APAR number
IV25699
Reported component name
JAVA CLASS LIBS
Reported component ID
620700130
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-08-06
Closed date
2012-08-30
Last modified date
2012-11-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
IV27276
Fix information
Fixed component name
JAVA CLASS LIBS
Fixed component ID
620700130
Applicable component levels
R600 PSY
UP
R700 PSY
UP
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