[ the following is some hefty speculation and not based on production
experience with cassandra specifically ]
> *never* complete. And compactions are expensive. They essentially make a
> node useless. So, we're left with 3/4 of a cluster, since we only have 4
> nodes.
Do you have a feel for why
We had to take a node down for an upgrade last night. When we brought it
back online in the morning, it got slammed by HH data all day so badly that
it was compacting near constantly, and the pending compactions pool was
piling up. I shut most of the writes down to let things catch up, which they
m
