On Feb 15, 2010, at 9:54 PM, Todd Lipcon wrote: > Hey all, > > Just a note that you should avoid upgrading your clusters to 1.6.0u18. > We've seen a lot of segfaults or bus errors on the DN when running > with this JVM - Stack found the ame thing on one of his clusters as > well. >
Have you seen this for 32bit, 64 bit, or both? If 64 bit, was it with -XX:+UseCompressedOops? Any idea if there are Sun bugs open for the crashes? I have found some notes that suggest that "-XX:-ReduceInitialCardMarks" will work around some known crash problems with 6u18, but that may be unrelated. Lastly, I assume that Java 6u17 should work the same as 6u16, since it is a minor patch over 6u16 where 6u18 includes a new version of Hotspot. Can anyone confirm that? > We've found 1.6.0u16 to be very stable. > > -Todd
