Ted Yu created KAFKA-6370:
-----------------------------
Summary: MirrorMakerIntegrationTest#testCommaSeparatedRegex may
fail due to NullPointerException
Key: KAFKA-6370
URL: https://issues.apache.org/jira/browse/KAFKA-6370
Project: Kafka
Issue Type: Bug
Reporter: Ted Yu
Priority: Minor
>From
>https://builds.apache.org/job/kafka-trunk-jdk8/2277/testReport/junit/kafka.tools/MirrorMakerIntegrationTest/testCommaSeparatedRegex/
> :
{code}
java.lang.NullPointerException
at
scala.collection.immutable.StringLike.$anonfun$format$1(StringLike.scala:351)
at
scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:234)
at
scala.collection.IndexedSeqOptimized.foreach(IndexedSeqOptimized.scala:32)
at
scala.collection.IndexedSeqOptimized.foreach$(IndexedSeqOptimized.scala:29)
at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:38)
at scala.collection.TraversableLike.map(TraversableLike.scala:234)
at scala.collection.TraversableLike.map$(TraversableLike.scala:227)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at scala.collection.immutable.StringLike.format(StringLike.scala:351)
at scala.collection.immutable.StringLike.format$(StringLike.scala:350)
at scala.collection.immutable.StringOps.format(StringOps.scala:29)
at
kafka.metrics.KafkaMetricsGroup$.$anonfun$toScope$3(KafkaMetricsGroup.scala:170)
at scala.collection.immutable.List.map(List.scala:283)
at
kafka.metrics.KafkaMetricsGroup$.kafka$metrics$KafkaMetricsGroup$$toScope(KafkaMetricsGroup.scala:170)
at
kafka.metrics.KafkaMetricsGroup.explicitMetricName(KafkaMetricsGroup.scala:67)
at
kafka.metrics.KafkaMetricsGroup.explicitMetricName$(KafkaMetricsGroup.scala:51)
at
kafka.network.RequestMetrics.explicitMetricName(RequestChannel.scala:352)
at
kafka.metrics.KafkaMetricsGroup.metricName(KafkaMetricsGroup.scala:47)
at
kafka.metrics.KafkaMetricsGroup.metricName$(KafkaMetricsGroup.scala:42)
at kafka.network.RequestMetrics.metricName(RequestChannel.scala:352)
at
kafka.metrics.KafkaMetricsGroup.newHistogram(KafkaMetricsGroup.scala:81)
at
kafka.metrics.KafkaMetricsGroup.newHistogram$(KafkaMetricsGroup.scala:80)
at kafka.network.RequestMetrics.newHistogram(RequestChannel.scala:352)
at kafka.network.RequestMetrics.<init>(RequestChannel.scala:364)
at
kafka.network.RequestChannel$Metrics.$anonfun$new$2(RequestChannel.scala:57)
at
scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:59)
at
scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:52)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at kafka.network.RequestChannel$Metrics.<init>(RequestChannel.scala:56)
at kafka.network.RequestChannel.<init>(RequestChannel.scala:243)
at kafka.network.SocketServer.<init>(SocketServer.scala:71)
at kafka.server.KafkaServer.startup(KafkaServer.scala:238)
at kafka.utils.TestUtils$.createServer(TestUtils.scala:135)
at
kafka.integration.KafkaServerTestHarness.$anonfun$setUp$1(KafkaServerTestHarness.scala:93)
{code}
Here is the code from KafkaMetricsGroup.scala :
{code}
.map { case (key, value) => "%s.%s".format(key, value.replaceAll("\\.",
"_"))}
{code}
It seems (some) value was null.
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