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https://issues.apache.org/jira/browse/STORM-3535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stig Rohde Døssing reassigned STORM-3535:
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Assignee: Stig Rohde Døssing
> KafkaOffsetMetric is not properly synchronized
> ----------------------------------------------
>
> Key: STORM-3535
> URL: https://issues.apache.org/jira/browse/STORM-3535
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-kafka-client
> Affects Versions: 2.1.0
> Reporter: Stig Rohde Døssing
> Assignee: Stig Rohde Døssing
> Priority: Major
>
> KafkaOffsetMetric.getValueAndReset runs in a different thread from the rest
> of the spout. It uses the KafkaConsumer from the KafkaSpout. The consumer is
> accessed through an unsynchronized field, and the spout may replace the
> consumer at any time.
> We should consider whether we can fix this, or if it would be better to give
> the offset metric it's own consumer.
> Also the metric accesses a number of properties in OffsetManagers, which are
> also not synchronized.
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