[jira] [Commented] (KAFKA-14928) Metrics collection contends on lock with log cleaning

["Stanislav Kozlovski (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-14928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17800610#comment-17800610 ] 

Stanislav Kozlovski commented on KAFKA-14928:
---------------------------------------------

Changing target fix version to 3.8 since this is not a blocker and we are cutting a 3.7 RC

 

 

> Metrics collection contends on lock with log cleaning
> -----------------------------------------------------
>
>                 Key: KAFKA-14928
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14928
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Divij Vaidya
>            Assignee: Divij Vaidya
>            Priority: Major
>             Fix For: 3.7.0
>
>
> In LogCleanerManager.scala, calculation of a metric requires a lock [1]. This same lock is required by core log cleaner functionality such as "grabFilthiestCompactedLog". This might lead to a situation where metric calculation holding the lock for an extended period of time may affect the core functionality of log cleaning.
> This outcome of this task is to prevent expensive metric calculation from blocking log cleaning/compaction activity.
> [1] https://github.com/apache/kafka/blob/dd63d88ac3ea7a9a55a6dacf9c5473e939322a55/core/src/main/scala/kafka/log/LogCleanerManager.scala#L102



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