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Posted to dev@kafka.apache.org by "Navina Ramesh (JIRA)" <ji...@apache.org> on 2015/01/24 02:48:35 UTC
[jira] [Created] (KAFKA-1897) Enhance MockProducer for more
sophisticated tests
Navina Ramesh created KAFKA-1897:
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Summary: Enhance MockProducer for more sophisticated tests
Key: KAFKA-1897
URL: https://issues.apache.org/jira/browse/KAFKA-1897
Project: Kafka
Issue Type: Bug
Components: producer
Reporter: Navina Ramesh
Assignee: Jun Rao
Fix For: 0.8.2
Based on the experience of upgrading the kafka producer in Samza, we faced two main constraints when using MockProducer:
1. The constructor requires a cluster specification and the tools to create a test cluster is not exposed. It is available from TestUtils in Kafka, however that jar is not published. This issue is currently being addressed in KAFKA-1861.
2. No support for testing a blocking client call. For example, "flush" in Samza blocks on the future returned by the latest send request. In order to test this, the MockProducer which buffers it should run in a concurrent mode. There is currently no provision to do this. We want the MockProducer to buffer the send and then, complete the callback concurrently while we wait for "flush" to unblock.
We can write unit tests that have improved coverage if we can add support for concurrent execution of the MockProducer and unit test thread. For example implementation, please refer to the latest version of KafkaSystemProducer.scala in the Apache Samza repository.
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