[jira] [Created] (KAFKA-6787) enumerate SampledStat.samples got null item

[Qiang Zhao (JIRA)]

Qiang Zhao created KAFKA-6787:
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             Summary: enumerate SampledStat.samples got null item
                 Key: KAFKA-6787
                 URL: https://issues.apache.org/jira/browse/KAFKA-6787
             Project: Kafka
          Issue Type: Bug
          Components: metrics
    Affects Versions: 1.1.0
            Reporter: Qiang Zhao


h3. Stacktrace

java.lang.NullPointerException at 
org.apache.kafka.common.metrics.stats.SampledStat.purgeObsoleteSamples(SampledStat.java:104)
 at 
org.apache.kafka.common.metrics.stats.SampledStat.measure(SampledStat.java:74) 
at org.apache.kafka.common.metrics.KafkaMetric.metricValue(KafkaMetric.java:68) 
at kafka.api.QuotaTestClients$.metricValue(BaseQuotaTest.scala:163) at 
kafka.api.QuotaTestClients.produceUntilThrottled(BaseQuotaTest.scala:193) at 
kafka.api.BaseQuotaTest.testThrottledProducerConsumer(BaseQuotaTest.scala:84)



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