Jay Kreps created KAFKA-1894:
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Summary: Avoid long or infinite blocking in the consumer
Key: KAFKA-1894
URL: https://issues.apache.org/jira/browse/KAFKA-1894
Project: Kafka
Issue Type: Sub-task
Reporter: Jay Kreps
The new consumer has a lot of loops that look something like
{code}
while(!isThingComplete())
client.poll();
{code}
This occurs both in KafkaConsumer but also in NetworkClient.completeAll. These
retry loops are actually mostly the behavior we want but there are several
cases where they may cause problems:
- In the case of a hard failure we may hang for a long time or indefinitely
before realizing the connection is lost.
- In the case where the cluster is malfunctioning or down we may retry forever.
It would probably be better to give a timeout to these. The proposed approach
would be to add something like retry.time.ms=60000 and only continue retrying
for that period of time.
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