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Posted to jira@kafka.apache.org by "Konstantine Karantasis (Jira)" <ji...@apache.org> on 2020/05/06 23:22:00 UTC

[jira] [Resolved] (KAFKA-9419) Integer Overflow Possible with CircularIterator

     [ https://issues.apache.org/jira/browse/KAFKA-9419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantine Karantasis resolved KAFKA-9419.
-------------------------------------------
    Resolution: Fixed

> Integer Overflow Possible with CircularIterator
> -----------------------------------------------
>
>                 Key: KAFKA-9419
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9419
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: David Mollitor
>            Priority: Minor
>             Fix For: 2.3.2, 2.6.0, 2.4.2, 2.5.1
>
>
> Very unlikely to happen, but as someone that gets called in when something goes wrong, I'd like to remove as many possibilities as possible.
>  
> [https://github.com/apache/kafka/blob/8c21fa837df6908d9147805e097407d006d95fd4/clients/src/main/java/org/apache/kafka/common/utils/CircularIterator.java#L39-L43]
>  
> Also, the current implementation will work with a LinkedList, but it won't work well.  The constant call to `get(i)` will perform at O(n^2).  Using an iterator instead allows other Collections to work reasonably well.



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