[KAFKA-3631] Recent addition of "nullable array" to MetadataRequest is breaking MirrorMaker system tests

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.0.0
• Assignee: Grant Henke
• Reporter: Gwen Shapira
• Created: 27/Apr/16 22:14
• Updated: 28/Apr/16 00:29
• Resolved: 28/Apr/16 00:29

Description

Here is the MirrorMaker log from last nights run:

[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)