hystrixConcurrencyStrategy.java

public class ThreadLocalUtil {
    private static ThreadLocal<Integer> idTL = new ThreadLocal<>();

    public static void setId(Integer id) {
        idTL.set(id);
    }

    public static void getId() {
        idTL.get();
    }

    public static void clear() {
        idTL.remove();
    }
}

public class ConcurrencyStrategy extends HystrixConcurrencyStrategy {
    @Override
    public <T> Callable<T> wrapCallable(Callable<T> callable) {
        Integer id = ThreadLocalUtil.getId();
        try {
            return () -> {
                ThreadLocalUtil.setId(id);
                T result = callable.call();
                ThreadLocalUtil.clear();
                return result;
            };
        }
    }
}

// Register the concurrency strategy
HystrixPlugins.getInstance().registerConcurrencyStrategy(new ConcurrencyStrategy());