risdenk commented on code in PR #1133:
URL: https://github.com/apache/solr/pull/1133#discussion_r1006071283
##########
solr/core/src/test/org/apache/solr/metrics/JvmMetricsTest.java:
##########
@@ -92,9 +91,10 @@ public void testSystemProperties() {
}
SolrMetricManager metricManager =
jetty.getCoreContainer().getMetricManager();
Map<String, Metric> metrics =
metricManager.registry("solr.jvm").getMetrics();
- MetricsMap map =
- (MetricsMap) ((SolrMetricManager.GaugeWrapper)
metrics.get("system.properties")).getGauge();
- assertNotNull(map);
+ Metric metric = metrics.get("system.properties");
+ assertNotNull(metrics.toString(), metric);
+ MetricsMap map = (MetricsMap) ((SolrMetricManager.GaugeWrapper<?>)
metric).getGauge();
+ assertNotNull(metrics.toString(), map);
Review Comment:
This addresses the NPE by adding an assertion. Doesn't fix the underlying
cause - haven't found one yet.
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