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https://issues.apache.org/jira/browse/STORM-4076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rui Abreu reopened STORM-4076:
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> KafkaTridentSpoutEmitters can poll all partitions at once instead of one at a
> time
> ----------------------------------------------------------------------------------
>
> Key: STORM-4076
> URL: https://issues.apache.org/jira/browse/STORM-4076
> Project: Apache Storm
> Issue Type: Improvement
> Components: storm-client, storm-kafka-client
> Reporter: Anand Hariharan
> Priority: Minor
> Fix For: 2.7.1
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> {{Currently 'KafkaTridentTransactionalSpoutEmitter' and
> 'KafkaTridentOpaqueEmitter' polls every partition assigned to the spout one
> by one while emitting new batches. }}
> {{But this can be improved by leveraging Kafka Consumer's usual polling
> strategy. That is Kafka Broker will take care of choosing the right
> partition.}}
> {{Advantages of this are}}
> {{1. If a spout is assigned multiple Topic Partitions, the consumer doesn't
> have to waste time on polling partitions with no data.}}
> {{2. This change will give better control over the Trident batch size, by
> adjusting Kafka Consumer properties.}}
> {{Note: This change will affect only when the batch is emitted for the first
> time.}}
>
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