[jira] [Created] (FLINK-14077) get java.util.ConcurrentModificationException when push metrics to PushGateway

[Shang Yuanchun (Jira)]

zhangjun created FLINK-14077:
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             Summary:  get java.util.ConcurrentModificationException when push metrics to PushGateway
                 Key: FLINK-14077
                 URL: https://issues.apache.org/jira/browse/FLINK-14077
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Metrics
    Affects Versions: 1.9.0
            Reporter: zhangjun


When my flink program is running for a while, I get the following error message
{code:java}
2019-09-15 10:11:28,058 WARN  org.apache.flink.metrics.prometheus.PrometheusPushGatewayReporter  - Failed to push metrics to PushGateway with jobName flinkjob_bb51bc6919b89a3e7d278d6666d0ef1d.java.util.ConcurrentModificationException    at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719)    at java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:742)    at java.util.AbstractCollection.addAll(AbstractCollection.java:343)    at java.util.HashSet.<init>(HashSet.java:119)    at org.apache.kafka.common.internals.PartitionStates.partitionSet(PartitionStates.java:66)    at org.apache.kafka.clients.consumer.internals.SubscriptionState.assignedPartitions(SubscriptionState.java:293)    at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator$ConsumerCoordinatorMetrics$1.measure(ConsumerCoordinator.java:884)    at org.apache.kafka.common.metrics.KafkaMetric.value(KafkaMetric.java:61)    at org.apache.kafka.common.metrics.KafkaMetric.value(KafkaMetric.java:52)    at org.apache.flink.streaming.connectors.kafka.internals.metrics.KafkaMetricWrapper.getValue(KafkaMetricWrapper.java:37)    at org.apache.flink.streaming.connectors.kafka.internals.metrics.KafkaMetricWrapper.getValue(KafkaMetricWrapper.java:27)    at org.apache.flink.metrics.prometheus.AbstractPrometheusReporter$2.get(AbstractPrometheusReporter.java:224)    at org.apache.flink.shaded.io.prometheus.client.Gauge.collect(Gauge.java:295)    at org.apache.flink.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:183)    at org.apache.flink.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:216)    at org.apache.flink.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:137)    at org.apache.flink.shaded.io.prometheus.client.exporter.common.TextFormat.write004(TextFormat.java:22)    at org.apache.flink.shaded.io.prometheus.client.exporter.PushGateway.doRequest(PushGateway.java:290)    at org.apache.flink.shaded.io.prometheus.client.exporter.PushGateway.push(PushGateway.java:105)    at org.apache.flink.metrics.prometheus.PrometheusPushGatewayReporter.report(PrometheusPushGatewayReporter.java:76)    at org.apache.flink.runtime.metrics.MetricRegistryImpl$ReporterTask.run(MetricRegistryImpl.java:436)    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)    at java.lang.Thread.run(Thread.java:745)
{code}
my flink job is a stream job, write to hbase from kafka stream,my kafka version is 0.10,the flink version is 1.9.0 ,the metrics conf is :
{code:java}
metrics.reporters: promgateway
metrics.reporter.promgateway.class: org.apache.flink.metrics.prometheus.PrometheusPushGatewayReporter
metrics.reporter.promgateway.host: ************
metrics.reporter.promgateway.port: 9091
metrics.reporter.promgateway.jobName: flinkjob_
metrics.reporter.promgateway.randomJobNameSuffix: true
metrics.reporter.promgateway.deleteOnShutdown: true
{code}
 



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