jackjlli commented on a change in pull request #6887:
URL: https://github.com/apache/incubator-pinot/pull/6887#discussion_r629580781
##########
File path:
pinot-common/src/main/java/org/apache/pinot/common/metrics/AbstractMetrics.java
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@@ -462,16 +463,48 @@ public void addCallbackGaugeIfNeeded(final String
metricName, final Callable<Lon
* @param valueCallback The callback function used to retrieve the value of
the gauge
*/
public void addCallbackGauge(final String metricName, final Callable<Long>
valueCallback) {
- PinotMetricUtils.makeGauge(_metricsRegistry,
PinotMetricUtils.makePinotMetricName(_clazz, _metricPrefix + metricName),
- PinotMetricUtils.makePinotGauge(avoid -> {
- try {
- return valueCallback.call();
- } catch (Exception e) {
- LOGGER.error("Caught exception", e);
- Utils.rethrowException(e);
- throw new AssertionError("Should not reach this");
- }
- }));
+ PinotMetricUtils
+ .makeGauge(_metricsRegistry,
PinotMetricUtils.makePinotMetricName(_clazz, _metricPrefix + metricName),
+ PinotMetricUtils.makePinotGauge(avoid -> {
+ try {
+ return valueCallback.call();
+ } catch (Exception e) {
+ LOGGER.error("Caught exception", e);
+ Utils.rethrowException(e);
+ throw new AssertionError("Should not reach this");
Review comment:
The `Utils.rethrowException(e);` is just a method name. Thus, it
requires an extra statement as the final return statement. The assertion
statement here is just to denote that this line won't be hit at any time. If
not, we may have a bug in `Utils.rethrowException(e);` method.
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