Zdenek Tison created FLINK-38703:
------------------------------------
Summary: ConcurrentModificationException in
FineGrainedResourceManager when reporting metrics
Key: FLINK-38703
URL: https://issues.apache.org/jira/browse/FLINK-38703
Project: Flink
Issue Type: Bug
Components: Runtime / Coordination
Affects Versions: 1.19.0
Reporter: Zdenek Tison
```
java.util.ConcurrentModificationException
at
java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1626)
at
java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at
java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
at
java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.IntPipeline.reduce(IntPipeline.java:491)
at java.base/java.util.stream.IntPipeline.sum(IntPipeline.java:449)
at
org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedTaskManagerTracker.getNumberFreeSlots(FineGrainedTaskManagerTracker.java:336)
at
org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManager.getNumberFreeSlots(FineGrainedSlotManager.java:774)
at
org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManager.lambda$registerSlotManagerMetrics$1(FineGrainedSlotManager.java:238)
at
io.confluent.flink.common.metrics.OpenTelemetryMetricAdapter.convertGauge(OpenTelemetryMetricAdapter.java:94)
at
io.confluent.flink.common.metrics.OpenTelemetryMetricReporter.collectAllMetrics(OpenTelemetryMetricReporter.java:223)
at
io.confluent.flink.common.metrics.OpenTelemetryMetricReporter.report(OpenTelemetryMetricReporter.java:261)
at
org.apache.flink.runtime.metrics.MetricRegistryImpl$ReporterTask.run(MetricRegistryImpl.java:622)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
```
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