presto-main/src/main/java/io/prestosql/operator/ExchangeClientFactory.java/ExchangeClientFactory/get
class ExchangeClientFactory:    @Override
    public ExchangeClient get(LocalMemoryContext systemMemoryContext)
    {
        return new ExchangeClient(
                maxBufferedBytes,
                maxResponseSize,
                concurrentRequestMultiplier,
                maxErrorDuration,
                acknowledgePages,
                httpClient,
                scheduler,
                systemMemoryContext,
                pageBufferClientCallbackExecutor);
    }