kezhuw commented on a change in pull request #15039:
URL: https://github.com/apache/flink/pull/15039#discussion_r587362929
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/metrics/util/MetricUtilsTest.java
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@@ -175,24 +183,20 @@ public MetricGroup addGroup(String name) {
@SuppressWarnings("unchecked")
final Gauge<Long> used = (Gauge<Long>)
metaspaceMetrics.get(MetricNames.MEMORY_USED);
- final long usedMetaspaceInitially = used.getValue();
+ runUntilMetricChanged("Metaspace", 10, () ->
redefineAsNewClass(MetricUtils.class), used);
+ }
- // check memory usage difference multiple times since other tests may
affect memory usage as
- // well
- for (int x = 0; x < 10; x++) {
- List<Runnable> consumerList = new ArrayList<>();
- for (int i = 0; i < 10; i++) {
- consumerList.add(() -> {});
- }
+ @Test
+ public void testNonHeapMetricUsageNotStatic() throws Exception {
+ final InterceptingOperatorMetricGroup nonHeapMetrics =
+ new InterceptingOperatorMetricGroup();
- final long usedMetaspaceAfterAllocation = used.getValue();
+ MetricUtils.instantiateNonHeapMemoryMetrics(nonHeapMetrics);
- if (usedMetaspaceInitially != usedMetaspaceAfterAllocation) {
- return;
- }
- Thread.sleep(50);
- }
- Assert.fail("Metaspace usage metric never changed it's value.");
+ @SuppressWarnings("unchecked")
+ final Gauge<Long> used = (Gauge<Long>)
nonHeapMetrics.get(MetricNames.MEMORY_USED);
+
+ runUntilMetricChanged("Non-heap", 10, () ->
redefineAsNewClass(MetricUtils.class), used);
Review comment:
@zentol Did you means named method and method reference ?
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