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https://issues.apache.org/jira/browse/KAFKA-2022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manikumar resolved KAFKA-2022.
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Resolution: Won't Fix
I think we need to catch the exception and retry with a new leader. Pl reopen
if you think the issue still exists
> simpleconsumer.fetch(req) throws a java.nio.channels.ClosedChannelException:
> null exception when the original leader fails instead of being trapped in the
> fetchResponse api while consuming messages
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-2022
> URL: https://issues.apache.org/jira/browse/KAFKA-2022
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 0.8.2.1
> Environment: 3 linux nodes with both zookeepr & brokers running under
> respective users on each..
> Reporter: Muqeet Mohammed Ali
> Assignee: Neha Narkhede
>
> simpleconsumer.fetch(req) throws a java.nio.channels.ClosedChannelException:
> null exception when the original leader fails, instead of being trapped in
> the fetchResponse api while consuming messages. My understanding was that any
> fetch failures can be found via fetchResponse.hasError() call and then be
> handled to fetch new leader in this case. Below is the relevant code snippet
> from the simple consumer with comments marking the line causing
> exception..can you please comment on this?
> if (simpleconsumer == null) {
> simpleconsumer = new
> SimpleConsumer(leaderAddress.getHostName(), leaderAddress.getPort(),
> consumerTimeout,
> consumerBufferSize,
> consumerId);
> }
> FetchRequest req = new FetchRequestBuilder().clientId(getConsumerId())
> .addFetch(topic, partition,
> offsetManager.getTempOffset(), consumerBufferSize)
> // Note: the fetchSize might need to be increased
> // if large batches are written to Kafka
> .build();
> // exception is throw at the below line
> FetchResponse fetchResponse = simpleconsumer.fetch(req);
> if (fetchResponse.hasError()) {
> numErrors++;
> etc...
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