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https://issues.apache.org/jira/browse/KAFKA-3631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15261069#comment-15261069
]
Gwen Shapira commented on KAFKA-3631:
-------------------------------------
More important, our network processor got that NPE:
{code}
2016-04-27 10:10:34,470] ERROR Processor got uncaught exception.
(kafka.network.Processor)
java.lang.NullPointerException
at
org.apache.kafka.common.protocol.types.Struct.toString(Struct.java:296)
at
org.apache.kafka.common.requests.AbstractRequestResponse.toString(AbstractRequestResponse.java:47)
at
kafka.network.RequestChannel$Request.kafka$network$RequestChannel$Request$$requestDesc(RequestChannel.scala:102)
at
kafka.network.RequestChannel$Request.updateRequestMetrics(RequestChannel.scala:154)
at
kafka.network.Processor$$anonfun$processCompletedSends$1.apply(SocketServer.scala:505)
at
kafka.network.Processor$$anonfun$processCompletedSends$1.apply(SocketServer.scala:501)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at kafka.network.Processor.processCompletedSends(SocketServer.scala:501)
at kafka.network.Processor.run(SocketServer.scala:414)
at java.lang.Thread.run(Thread.java:745)
{code}
We should probably check if the network processor absolutely needs to throw up
on Struct.toString() failures.
> Recent addition of "nullable array" to MetadataRequest is breaking
> MirrorMaker system tests
> -------------------------------------------------------------------------------------------
>
> Key: KAFKA-3631
> URL: https://issues.apache.org/jira/browse/KAFKA-3631
> Project: Kafka
> Issue Type: Bug
> Reporter: Gwen Shapira
> Assignee: Grant Henke
>
> Here is the MirrorMaker log from last nights run:
> {code}
> [2016-04-27 10:05:44,721] DEBUG Set SASL client state to COMPLETE
> (org.apache.kafka.common.security.authenticator.SaslClientAuthenticator)
> SLF4J: Failed toString() invocation on an object of type
> [org.apache.kafka.common.requests.MetadataRequest]
> Reported exception:
> java.lang.NullPointerException
> at
> org.apache.kafka.common.protocol.types.Struct.toString(Struct.java:296)
> at
> org.apache.kafka.common.requests.AbstractRequestResponse.toString(AbstractRequestResponse.java:47)
> at
> org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:299)
> at
> org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:271)
> at
> org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:233)
> at
> org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:173)
> at org.slf4j.helpers.MessageFormatter.format(MessageFormatter.java:151)
> at org.slf4j.impl.Log4jLoggerAdapter.debug(Log4jLoggerAdapter.java:252)
> at
> org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:640)
> at
> org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:552)
> at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:258)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:338)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:212)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:191)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:161)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorKnown(AbstractCoordinator.java:179)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:898)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:864)
> at
> kafka.tools.MirrorMaker$MirrorMakerNewConsumer.receive(MirrorMaker.scala:557)
> at kafka.tools.MirrorMaker$MirrorMakerThread.run(MirrorMaker.scala:412)
> [2016-04-27 10:05:44,785] DEBUG Sending metadata request [FAILED toString()]
> to node 1 (org.apache.kafka.clients.NetworkClient)
> {code}
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