Properly reset metric flush flag on metric emission (#3493)

* Fix schedule flag reset

* Update changelog

Author: markushi

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Fixes
 
 - Remove profiling timeout logic and disable profiling on API 21 ([#3478](https://github.com/getsentry/sentry-java/pull/3478))
+- Properly reset metric flush flag on metric emission ([#3493](https://github.com/getsentry/sentry-java/pull/3493))
 
 ## 7.10.0
 

sentry/src/main/java/io/sentry/MetricsAggregator.java

@@ -239,6 +239,8 @@ public void flush(boolean force) {
       force = true;
     }
 
+    flushScheduled = false;
+
     final @NotNull Set<Long> flushableBuckets = getFlushableBuckets(force);
     if (flushableBuckets.isEmpty()) {
       logger.log(SentryLevel.DEBUG, "Metrics: nothing to flush");

sentry/src/test/java/io/sentry/MetricsAggregatorTest.kt

@@ -312,6 +312,19 @@ class MetricsAggregatorTest {
 
         // there is no other metric to capture, so flush is not scheduled again
         assertFalse(fixture.executorService.hasScheduledRunnables())
+
+        // once another metric is emitted
+        aggregator.increment(
+            "name1",
+            1.0,
+            MeasurementUnit.Custom("unit0"),
+            mapOf("key0" to "value0"),
+            20_001,
+            null
+        )
+
+        // then flush should be scheduled again
+        assertTrue(fixture.executorService.hasScheduledRunnables())
     }
 
     @Test