[jira] [Resolved] (STORM-4076) KafkaTridentSpoutEmitters can poll all partitions at once instead of one at a time

["Rui Abreu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/STORM-4076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rui Abreu resolved STORM-4076.
------------------------------
    Resolution: Fixed

> 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: 2.7.0
>
>          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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