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Posted to jira@kafka.apache.org by "David Jacot (Jira)" <ji...@apache.org> on 2021/12/08 07:18:00 UTC

[jira] [Updated] (KAFKA-13512) topicIdsToNames and topicNamesToIds allocate unnecessary maps

     [ https://issues.apache.org/jira/browse/KAFKA-13512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Jacot updated KAFKA-13512:
--------------------------------
    Fix Version/s: 3.1.0

> topicIdsToNames and topicNamesToIds allocate unnecessary maps
> -------------------------------------------------------------
>
>                 Key: KAFKA-13512
>                 URL: https://issues.apache.org/jira/browse/KAFKA-13512
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 3.1.0
>            Reporter: Justine Olshan
>            Assignee: Justine Olshan
>            Priority: Blocker
>             Fix For: 3.1.0
>
>
> Currently we write the methods as follows:
> {{def topicNamesToIds(): util.Map[String, Uuid] = {}}
> {{    new util.HashMap(metadataSnapshot.topicIds.asJava)}}
> {{}}}
> We do not need to allocate a new map however, we can simply use
> {{Collections.unmodifiableMap(metadataSnapshot.topicIds.asJava)}}
> We can do something similar for the topicIdsToNames implementation.



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