Tom Bentley created KAFKA-12156:
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Summary: Document consequences of single threaded response handling
Key: KAFKA-12156
URL: https://issues.apache.org/jira/browse/KAFKA-12156
Project: Kafka
Issue Type: Improvement
Components: admin
Reporter: Tom Bentley
Assignee: Tom Bentley
If users block the response handling thread in one call waiting for the result
of a second "nested" call then the client effectively hangs because the 2nd
call's response will never be processed. For example:
admin.listTopics().names().thenApply(topics -> {
// ... Some code to decide the topicsToCreate based on the topics
admin.createTopics(topicsToCreate).all().get()
return null;
}).get();
The {{createTopics()...get()}} block's indefinitely preventing the
{{ListTopics}} response processing from dealing with the {{CreateTopics}}
response.
This can be surprising to users of the Admin API, so we should at least
document that this pattern should not be used.
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