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https://issues.apache.org/jira/browse/KAFKA-3899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15348164#comment-15348164
]
Edoardo Comar commented on KAFKA-3899:
--------------------------------------
A less important use case that shows the same behavior is: broker configured to
use SASL, consumer is not
again an infinte loop occurs with only debug level tracing showing the problem.
IMHO this is a less important use case as confiuration should be sorted at test
time,
but the main use case of no feedback given to the client on wrong credentials
is a serious issue.
this is the stack trace printed in debug for a misconfigured client:
java.io.EOFException
at
org.apache.kafka.common.network.NetworkReceive.readFromReadableChannel(NetworkReceive.java:83)
at
org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:71)
at
org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:154)
at
org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:135)
at
org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:323)
at org.apache.kafka.common.network.Selector.poll(Selector.java:283)
at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:260)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:360)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:224)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:192)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:134)
at
org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:183)
at
org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:973)
at
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:937)
> Consumer.poll() stuck in loop if wrong credentials are supplied
> ---------------------------------------------------------------
>
> Key: KAFKA-3899
> URL: https://issues.apache.org/jira/browse/KAFKA-3899
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 0.10.0.0
> Reporter: Edoardo Comar
>
> With the broker configured to use SASL PLAIN ,
> if the client is supplying wrong credentials,
> a consumer calling poll()
> is stuck forever and only inspection of DEBUG-level logging can tell what is
> wrong.
> [2016-06-24 12:15:16,455] DEBUG Connection with localhost/127.0.0.1
> disconnected (org.apache.kafka.common.network.Selector)
> java.io.EOFException
> at
> org.apache.kafka.common.network.NetworkReceive.readFromReadableChannel(NetworkReceive.java:83)
> at
> org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:71)
> at
> org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.receiveResponseOrToken(SaslClientAuthenticator.java:239)
> at
> org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.authenticate(SaslClientAuthenticator.java:182)
> at
> org.apache.kafka.common.network.KafkaChannel.prepare(KafkaChannel.java:64)
> at
> org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:318)
> at org.apache.kafka.common.network.Selector.poll(Selector.java:283)
> at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:260)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:360)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:224)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:192)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:134)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:183)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:973)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:937)
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