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https://issues.apache.org/jira/browse/CRUNCH-609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Micah Whitacre updated CRUNCH-609:
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Attachment: CRUNCH-609d.patch
Ok last patch I promise. Fixes a bug in the polltime backoff. Specifically
last patch multiplied the backoff too many times. Talking with colleagues the
backoff isn't really necessary b/c the Kafka Consumer will be already
retrieving in a background thread so should eventually return regardless of how
long sleeping. So simplified that part of the code.
> 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
> Attachments: CRUNCH-609.patch, CRUNCH-609b.patch, CRUNCH-609c.patch,
> CRUNCH-609d.patch
>
>
> 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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