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Posted to jira@kafka.apache.org by "Gregor Uhlenheuer (JIRA)" <ji...@apache.org> on 2017/07/12 07:24:00 UTC

[jira] [Created] (KAFKA-5584) Incorrect log size for topics larger than 2 GB

Gregor Uhlenheuer created KAFKA-5584:
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             Summary: Incorrect log size for topics larger than 2 GB
                 Key: KAFKA-5584
                 URL: https://issues.apache.org/jira/browse/KAFKA-5584
             Project: Kafka
          Issue Type: Bug
          Components: log
            Reporter: Gregor Uhlenheuer
         Attachments: Screen Shot 2017-07-12 at 09.10.53.png

The {{size}} of a {{Log}} is calculated incorrectly due to an Integer overflow. For large topics (larger than 2 GB) this value overflows.

This is easily observable in the reported metrics values of the path {{log.Log.partiion.*.topic.<topicname>.Size}} (see attached screenshot).

Moreover I think this breaks the size-based retention (via {{log.retention.bytes}} and {{retention.bytes}}) of large topics as well.

I am not sure on the recommended workflow, should I open a pull request on github with a fix?



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