/**
* Since this object is a registered updater, this method will be called periodically, e.g. every
* 5 seconds.
*/
public void doUpdates(MetricsContext unused) {
synchronized (this) {
metricsRecord.setMetric("maps_running", tt.mapTotal);
metricsRecord.setMetric("reduces_running", tt.reduceTotal);
metricsRecord.setMetric("mapTaskSlots", (short) tt.getMaxCurrentMapTasks());
metricsRecord.setMetric("reduceTaskSlots", (short) tt.getMaxCurrentReduceTasks());
metricsRecord.incrMetric("tasks_completed", numCompletedTasks);
metricsRecord.incrMetric("tasks_failed_timeout", timedoutTasks);
metricsRecord.incrMetric("tasks_failed_ping", tasksFailedPing);
numCompletedTasks = 0;
timedoutTasks = 0;
tasksFailedPing = 0;
}
metricsRecord.update();
}
/**
* Push the metric to the mr. The metric is pushed only if it was updated since last push
*
* <p>Note this does NOT push to JMX (JMX gets the info via {@link #get()}
*
* @param mr
*/
public synchronized void pushMetric(final MetricsRecord mr) {
if (changed) {
try {
mr.setMetric(getName(), value);
} catch (Exception e) {
LOG.info("pushMetric failed for " + getName() + "\n" + StringUtils.stringifyException(e));
}
}
changed = false;
}
