FULL PRODUCT VERSION :
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin mysh.local 16.6.0 Darwin Kernel Version 16.6.0: Fri Apr 14 16:21:16 PDT 2017; root:xnu-3789.60.24~6/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
ConcurrentHashMap infinite loops in one condition


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run the code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
print result and exit
ACTUAL -
infinite loop

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class CommonTest {
    private static Map<Integer, Integer> cache = new ConcurrentHashMap<>();

    public static void main(String[] args) {
        System.out.println(fibonacci(80));
    }

    public static int fibonacci(Integer i) {
        if (i == 0 || i == 1) {
            return i;
        }
        return cache.computeIfAbsent(i, (key) -> {
            System.out.println("Compute fibonacci " + key);
            return fibonacci(key - 1) + fibonacci(key - 2);
        });
    }
}


---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
replace computeIfAbsent with get-set