> > GC collector is G1. I ever repair the node after scale up. The JVM issue > reproduced. Can I increase the heap to 40 GB on a 64GB VM? >
I wouldn't recommend going beyond 31GB on G1. It will be diminishing returns as I mentioned before. Do you think the issue is related to materialized view or big partition? > Yes, materialised views are problematic and I don't recommend them for production since they're still experimental. But if I were to guess, I'd say your problem is more an issue with large partitions and too many tombstones both putting pressure on the heap. The thing is if you can't bootstrap because you're running into the TombstoneOverwhelmException (I'm guessing), I can't see how you wouldn't run into it with repairs. In any case, try running repairs on the smaller tables first and work on the remaining tables one-by-one. But bootstrapping a node with repairs is a very expensive exercise than just plain old bootstrap. I get that you're in a tough spot right now so good luck!
