Steven Zhen Wu created FLINK-10774:
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Summary: connection leak when partition discovery is disabled and
open throws exception
Key: FLINK-10774
URL: https://issues.apache.org/jira/browse/FLINK-10774
Project: Flink
Issue Type: Bug
Components: Kafka Connector
Affects Versions: 1.6.2, 1.5.5, 1.4.2
Reporter: Steven Zhen Wu
Assignee: Steven Zhen Wu
Here is the scenario to reproduce the issue
* partition discovery is disabled
* open method throws an exception (e.g. when broker SSL authorization denies
request)
In this scenario, run method won't be executed. As a result,
_partitionDiscoverer.close()_ won't be called. that caused the connection leak,
because KafkaConsumer is initialized but not closed. That has caused outage
that brought down our Kafka cluster, when a high-parallelism job got into a
restart/failure loop.
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