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https://issues.apache.org/jira/browse/CASSANDRA-10672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995423#comment-14995423
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Russ Hatch commented on CASSANDRA-10672:
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Thanks [~snazy]. I'll move it over to use a simple count, and add a patches for
other impacted versions. Would definitely be nice to have accurate test results
when running jacoco on those older versions.
> jacoco instrumentation breaks UDF validation
> --------------------------------------------
>
> Key: CASSANDRA-10672
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10672
> Project: Cassandra
> Issue Type: Bug
> Reporter: Russ Hatch
> Assignee: Russ Hatch
> Fix For: 3.2
>
> Attachments: trunk-10672.txt
>
>
> The jacoco agent injects a synthetic method into UDF classes as part of
> instrumentation for code coverage. Currently the UDF code checks the method
> count on java UDF classes, and it fails due to the jacoco synthetic method
> increasing the method count.
> This causes a number of false test failures when running unit tests with
> jacoco instrumentation.
> A simple fix is just to ignore synthetic methods in the counting process.
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