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https://issues.apache.org/jira/browse/KAFKA-15235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17748932#comment-17748932
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Eike Thaden commented on KAFKA-15235:
-------------------------------------
[~bmscomp] finally I was able to generate coverage reports. I guess my issues
have to do with my hardware setup: I'm using an AMD Ryzen 9 7950X 16-Core
Processor (i.e. 32 virtual cores) with 64 GB of RAM. If I run the coverage
report generation according to the documentation, I test steps failing with
OutOfMemory exceptions which prevents the generation of the reports. To me, it
looks like too many parallel processes are spawned.
I tried to increase the maximum heap size to up to 8GB in build.gradle, with
not effect. I succeeded creating the reports after I restricted the number of
parallel workers: "./gradlew clients:reportCoverage --max-workers 4
-PenableTestCoverage=true -Dorg.gradle.parallel=false".
I thought, the "org.gradle.parallel=false" should do that, but either this
doesn't work or I misunderstood the concept.
> No test coverage reports for Java due to settings for Jacoco being
> incompatible with Gradle 8.x
> -----------------------------------------------------------------------------------------------
>
> Key: KAFKA-15235
> URL: https://issues.apache.org/jira/browse/KAFKA-15235
> Project: Kafka
> Issue Type: Bug
> Components: unit tests
> Affects Versions: 3.6.0
> Reporter: Eike Thaden
> Assignee: Said BOUDJELDA
> Priority: Major
> Labels: buid, coverage, gradle, tools
> Fix For: 3.6.0, 3.5.2
>
>
> On current dev branch, gradle 8.x fails while trying to generate test
> coverage reports as stated in the README, e.g. by running
> {code:java}
> ./gradlew clients:reportCoverage -PenableTestCoverage=true
> -Dorg.gradle.parallel=false{code}
>
> The error message states:
> {code:java}
> "Could not set unknown property 'enabled' for Report html of type
> org.gradle.api.reporting.internal.TaskGeneratedSingleDirectoryReport"
> {code}
> In "build.gradle", the library "jacoco" which is used to generate test
> coverage reports for the Java code is configured in two different places with
> these settings:
>
> {code:java}
> jacocoTestReport {
> dependsOn tasks.test
> sourceSets sourceSets.main
> reports {
> html.enabled = true
> xml.enabled = true
> csv.enabled = false
> }
> }
> {code}
>
> With the latest version of jacoco, shipped with gradle 8.x, these config
> options are not compatible anymore. A correct configuration might look like
> like this:
>
> {code:java}
> jacocoTestReport {
> dependsOn tasks.test
> sourceSets sourceSets.main
> reports {
> html {
> required = true
> }
> xml {
> required = true
> }
> csv{
> required = false
> }
> }
> }
> {code}
>
> However, even with these settings being accepted by Gradle, I was unable to
> generate any test coverage report. This might be due to some OOM issues, but
> I tried a lots of settings including increasing the maximum heap for the JVM
> gradle tasks without getting this to work.
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