Examples of org.apache.oozie.util.MetricsInstrumentation$Sampler

org.apache.oozie.util.MetricsInstrumentation
Instrumentation framework that is mostly compatible with {@link Instrumentation} but is backed by Codahale Metrics. This classwas designed to minimize the changes required to switch from {@link Instrumentation} to {@link MetricsInstrumentation} by keepingthe same API. However, certain operations are obviously implemented differently or are no longer needed; and the output format is a little different. Internally, this class maps Cron to {@link com.codahale.metrics.Timer}, Variable to {@link Gauge}, counter to {@link Counter}, and Sampler to {@link Histogram}.

     * @param services services instance.
     * @throws org.apache.oozie.service.ServiceException
     */
    @Override
    public void init(Services services) throws ServiceException {
        final MetricsInstrumentation instr = new MetricsInstrumentation();
        int interval = services.getConf().getInt(CONF_LOGGING_INTERVAL, 60);
        initLogging(services, instr, interval);
        instrumentation = instr;
        isEnabled = true;
    }

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