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Posted to jira@kafka.apache.org by "Divij Vaidya (Jira)" <ji...@apache.org> on 2023/04/21 14:22:00 UTC

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

Divij Vaidya created KAFKA-14928:
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             Summary: 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
             Fix For: 3.6.0


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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