For 1.3 we added the syntax for describing the behavior of jdk.tls.keyLimits, but the documented syntax is:

# The syntax for the property is described below:
# KeyLimits:
# " KeyLimit { , KeyLimit } "
#
# WeakKeyLimit:
# AlgorithmName Action Length
#
# AlgorithmName:
# A full algorithm transformation.
#
# Action:
# KeyUpdate
#
# Length:
# The amount of encrypted data in a session before the Action occurs
# This value may be an integer value in bytes, or as a power of two, 2^29.

I believe WeakKeyLimit should be KeyLimit.