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Posted to dev@kafka.apache.org by "Guozhang Wang (JIRA)" <ji...@apache.org> on 2017/04/21 22:55:04 UTC
[jira] [Resolved] (KAFKA-454) ProducerSendThread calls
ListBuffer.size a whole bunch. That is a O(n) operation
[ https://issues.apache.org/jira/browse/KAFKA-454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guozhang Wang resolved KAFKA-454.
---------------------------------
Resolution: Won't Fix
> ProducerSendThread calls ListBuffer.size a whole bunch. That is a O(n) operation
> --------------------------------------------------------------------------------
>
> Key: KAFKA-454
> URL: https://issues.apache.org/jira/browse/KAFKA-454
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.7.1, 0.7.2, 0.8.0
> Environment: NA
> Reporter: Matthew Rathbone
> Priority: Minor
>
> So there are various statements throughout the async code that call 'events.size', mostly for debugging purposes.
> Problem is that this call is O(n), so it could add up if the batch size is high. (it's a ListBuffer)
> I see this in at least ProducerSendThread, likely more. Will factor this out myself soon when I start hacking on the project, just wanted to put this somewhere.
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