I noticed that some of my last changes to TestClusterDumper, for
example, were reversed in a subsequent change. I don't mind, they were
largely cosmetic, to fix little checkstyle warnings. Not sure if that
was on purpose or an accidental artifact of the merge. But I wonder if
people are finding it hard to merge such changes and if so are people
comfortable asking to keep 'hands off' certain sections for a limited
time when it's actively being worked on? (We should be able to do
this, informally, without resorting to locking or anything.)
