junior level error, dont understand whats to talk here about... Use ConcurrentSkipListMap and never write our own concurrent data structure unless you Doug Lea
How about the senior engineer level error of forking Doug Lea's concurrent data structures only to make them operate in worst-case time complexity? Found this doozy recently.
[1] https://gist.github.com/ben-manes/6312727adfa2235cb7c5e25cae...