I've got a grid which has been up and running for some time. It's been using a
32 bit JVM. I am hitting the wall on memory within NameNode and need to
specify max heap size > 4G. Is it possible to switch seemlessly from 32bit JVM
to 64bit? I've tried this on a small test grid and had no issues, but I want
to make sure it's OK to proceed.
Speaking of NameNode, what does it keep in memory? Our memory usage ramped up
rather suddenly recently. Also, does SecondaryNameNode require the same amount
of memory as NameNode?
Thanks for any help,
C G
