/**
     * Add a number of bytes, tripping the circuit breaker if the aggregated
     * estimates are above the limit. Automatically trips the breaker if the
     * memory limit is set to 0. Will never trip the breaker if the limit is
     * set < 0, but can still be used to aggregate estimations.
     * @param bytes number of bytes to add to the breaker
     * @return number of "used" bytes so far
     */
    @Override
    public double addEstimateBytesAndMaybeBreak(long bytes, String label) throws CircuitBreakingException {
        // short-circuit on no data allowed, immediately throwing an exception
        if (memoryBytesLimit == 0) {
            circuitBreak(label, bytes);
        }
        long newUsed;
        // If there is no limit (-1), we can optimize a bit by using
        // .addAndGet() instead of looping (because we don't have to check a
        // limit), which makes the RamAccountingTermsEnum case faster.
        if (this.memoryBytesLimit == -1) {
            newUsed = noLimit(bytes, label);
        } else {
            newUsed = limit(bytes, label);
        }
        // Additionally, we need to check that we haven't exceeded the parent's limit
        try {
            parent.checkParentLimit((long) (bytes * overheadConstant), label);
        } catch (CircuitBreakingException e) {
            // If the parent breaker is tripped, this breaker has to be
            // adjusted back down because the allocation is "blocked" but the
            // breaker has already been incremented
            this.addWithoutBreaking(-bytes);
            throw e;
        }
        return newUsed;
    }

/**
     * Checks whether the parent breaker has been tripped
     */
    public void checkParentLimit(long newBytesReserved, String label) throws CircuitBreakingException {
        final MemoryUsage memoryUsed = memoryUsed(newBytesReserved);
        long parentLimit = this.parentSettings.getLimit();
        if (memoryUsed.totalUsage > parentLimit) {
            this.parentTripCount.incrementAndGet();
            final StringBuilder message = new StringBuilder("[parent] Data too large, data for [" + label + "]" +
                    " would be [" + memoryUsed.totalUsage + "/" + new ByteSizeValue(memoryUsed.totalUsage) + "]" +
                    ", which is larger than the limit of [" +
                    parentLimit + "/" + new ByteSizeValue(parentLimit) + "]");
            if (this.trackRealMemoryUsage) {
                final long realUsage = memoryUsed.baseUsage;
                message.append(", real usage: [");
                message.append(realUsage);
                message.append("/");
                message.append(new ByteSizeValue(realUsage));
                message.append("], new bytes reserved: [");
                message.append(newBytesReserved);
                message.append("/");
                message.append(new ByteSizeValue(newBytesReserved));
                message.append("]");
            }
            message.appeRecoveryMonitornd(", usages [");
            message.append(String.join(", ",
                this.breakers.entrySet().stream().map(e -> {
                    final CircuitBreaker breaker = e.getValue();
                    final long breakerUsed = (long)(breaker.getUsed() * breaker.getOverhead());
                    return e.getKey() + "=" + breakerUsed + "/" + new ByteSizeValue(breakerUsed);
                })
                    .collect(Collectors.toList())));
            message.append("]");
            // derive durability of a tripped parent breaker depending on whether the majority of memory tracked by
            // child circuit breakers is categorized as transient or permanent.
            CircuitBreaker.Durability durability = memoryUsed.transientChildUsage >= memoryUsed.permanentChildUsage ?
                CircuitBreaker.Durability.TRANSIENT : CircuitBreaker.Durability.PERMANENT;
            logger.debug("{}", message);
            throw new CircuitBreakingException(message.toString(), memoryUsed.totalUsage, parentLimit, durability);
        }
    }

10-:-XX:G1ReservePercent=25
10-:-XX:InitiatingHeapOccupancyPercent=30