G1GC is now default
I fired up trunk to check something, and noticed this:
INFO [Service Thread] 2018-08-08 15:01:36,723 GCInspector.java:290 - G1
Young Generation GC in 339ms. G1 Eden Space: 4634705920 -> 0; G1 Old Gen:
1190138352 -> 1435504616; G1 Survivor Space: 406847488 -> 301989888;
which I thought was a bit weird, since I was using trunk without making any
changes and didn't remember seeing a JIRA where we agreed to make that
change. I looked back and saw it made it in as a side effect of
CASSANDRA-9608, but wasn't explicitly discussed in the ticket, and there's
no note of it in CHANGES.
I'm personally OK with this change as G1 is a safer bet for anyone who uses
the defaults, but we should be explicit about the change. Can anyone think
of a reason why we'd need to revert this back to ParNew / CMS?