JDK-6920090 : G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed. Resolved: Release in which this issue/RFE has been resolved. Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
This is a temporary measure to deal with observed lingering instability
with G1 when ReduceInitialCardMarks is enabled (the default today).
See comments section for email trail describing this and the test
case which exposes the issue.