[
https://issues.apache.org/jira/browse/KAFKA-899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14150648#comment-14150648
]
Andras Hatvani edited comment on KAFKA-899 at 9/27/14 4:13 PM:
---------------------------------------------------------------
This isn't fixed in 0.8.1.1 as the behavior is the same.
As a workaround increase retry.backoff.ms from the default 100 ms to 1000 ms.
In case this would be not enough for you, you can try to change the values of
- message.send.max.retries from the default 5 to e.g. 10 and
- topic.metadata.refresh.interval.ms to 0.
This is the expected behavior, therefore an exception mustn't be thrown, rather
it has to be communicated that the leader election is in progress. Furthermore,
suggestions regarding changing the values variables I mentioned should be
mandatory.
was (Author: andras hatvani):
This isn't fixed in 0.8.1.1 as the behavior is the same.
> LeaderNotAvailableException the first time a new message for a partition is
> processed.
> --------------------------------------------------------------------------------------
>
> Key: KAFKA-899
> URL: https://issues.apache.org/jira/browse/KAFKA-899
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.8.0
> Reporter: Jason Rosenberg
> Assignee: Jun Rao
> Fix For: 0.8.0
>
> Attachments: kafka-899.patch, kafka-899_v2.patch, kafka-899_v3.patch
>
>
> I'm porting some unit tests from 0.7.2 to 0.8.0. The test does the
> following, all embedded in the same java process:
> -- spins up a zk instance
> -- spins up a kafka server using a fresh log directory
> -- creates a producer and sends a message
> -- creates a high-level consumer and verifies that it can consume the message
> -- shuts down the consumer
> -- stops the kafka server
> -- stops zk
> The test seems to be working fine now, however, I consistently see the
> following exceptions (which from poking around the mailing list seem to be
> expected?). If these are expected, can we suppress the logging of these
> exceptions, since it clutters the output of tests, and presumably, clutters
> the logs of the running server/consumers, during clean startup and
> shutdown......
> When I call producer.send(), I get:
> 1071 [main] WARN kafka.producer.BrokerPartitionInfo - Error while fetching
> metadata partition 0 leader: none replicas: isr:
> isUnderReplicated: false for topic partition [test-topic,0]: [class
> kafka.common.LeaderNotAvailableException]
> 1081 [main] WARN kafka.producer.async.DefaultEventHandler - Failed to
> collate messages by topic,partition due to
> kafka.common.LeaderNotAvailableException: No leader for any partition
> at
> kafka.producer.async.DefaultEventHandler.kafka$producer$async$DefaultEventHandler$$getPartition(DefaultEventHandler.scala:212)
> at
> kafka.producer.async.DefaultEventHandler$$anonfun$partitionAndCollate$1.apply(DefaultEventHandler.scala:150)
> at
> kafka.producer.async.DefaultEventHandler$$anonfun$partitionAndCollate$1.apply(DefaultEventHandler.scala:148)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:57)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:43)
> at
> kafka.producer.async.DefaultEventHandler.partitionAndCollate(DefaultEventHandler.scala:148)
> at
> kafka.producer.async.DefaultEventHandler.dispatchSerializedData(DefaultEventHandler.scala:94)
> at
> kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:72)
> at kafka.producer.Producer.send(Producer.scala:74)
> at kafka.javaapi.producer.Producer.send(Producer.scala:32)
> at
> com.squareup.kafka.server.KafkaServerTest.produceAndConsumeMessage(KafkaServerTest.java:98)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
> at
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
> at
> com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
> 1133 [kafka-request-handler-1] WARN kafka.server.HighwaterMarkCheckpoint -
> No highwatermark file is found. Returning 0 as the highwatermark for
> partition [test-topic,0]
> ...
> ...
> It would be great if instead of this exception, it would just log a
> meaningful message, like:
> "No leader was available for partition X, one will now be created"
> Jason
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
