frontend/server/src/main/java/org/pytorch/serve/job/GRPCJob.java [49:68]:
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        logger.debug(
                "Waiting time ns: {}, Backend time ns: {}",
                getScheduled() - getBegin(),
                System.nanoTime() - getScheduled());
        String queueTime =
                String.valueOf(
                        TimeUnit.MILLISECONDS.convert(
                                getScheduled() - getBegin(), TimeUnit.NANOSECONDS));
        loggerTsMetrics.info(
                "{}",
                new Metric(
                        "QueueTime",
                        queueTime,
                        "ms",
                        ConfigManager.getInstance().getHostName(),
                        DIMENSION));
    }

    @Override
    public void sendError(int status, String error) {
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frontend/server/src/main/java/org/pytorch/serve/job/RestJob.java [81:100]:
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        logger.debug(
                "Waiting time ns: {}, Backend time ns: {}",
                getScheduled() - getBegin(),
                System.nanoTime() - getScheduled());
        String queueTime =
                String.valueOf(
                        TimeUnit.MILLISECONDS.convert(
                                getScheduled() - getBegin(), TimeUnit.NANOSECONDS));
        loggerTsMetrics.info(
                "{}",
                new Metric(
                        "QueueTime",
                        queueTime,
                        "ms",
                        ConfigManager.getInstance().getHostName(),
                        DIMENSION));
    }

    @Override
    public void sendError(int status, String error) {
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