Micah Whitacre created CRUNCH-609:
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Summary: KafkaSource could skip data with slow broker response
Key: CRUNCH-609
URL: https://issues.apache.org/jira/browse/CRUNCH-609
Project: Crunch
Issue Type: Bug
Components: IO
Reporter: Micah Whitacre
Assignee: Micah Whitacre
In the case of the consumer.poll timing out, the KafkaRecordReader could return
with no values in the records iterator which then causes the KafkaRecordReader
to exit prematurely[1]. To fix this we need to probably better track the
start/end offset and that progress vs the null value.
Additionally if we wanted to be smarter we could do some "backoff" for the
timeout or just have consumer specify a larger value.
[1] -
https://github.com/apache/crunch/blob/360d72a4f887505e020fdb8f99c3ccb1800693f6/crunch-kafka/src/main/java/org/apache/crunch/kafka/inputformat/KafkaRecordReader.java#L122
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