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https://issues.apache.org/jira/browse/SUREFIRE-1179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14910181#comment-14910181
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ASF GitHub Bot commented on SUREFIRE-1179:
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Github user juherr commented on the pull request:
https://github.com/apache/maven-surefire/pull/106#issuecomment-143677343
I had time to analyze and I found that `dataProviderThreadCount` is taken
into account only when `m_commandLineTestClasses != null ||
m_commandLineMethods != null`.
`m_commandLineTestClasses` could only be != null when `setTestClasses` is
called, and `m_commandLineMethods` could only be != null when `-methods` is
used, but `-methods` is not available via the deprecated `TestNG#configure(Map
cmdLineArgs)`.
I can't say if this behavior is expected or if something should be done in
TestNG. What do you think @cbeust?
Another solution would be to update `TestNGMapConfigurator#configure(
XmlSuite suite, Map<String, String> options )` (or another Configurator) from
surefire in order to use `suite.setDataProviderThreadCount()`. But the method
is only available since 5.10 where the current testng used by surefire is 5.7.
But I don't know if I' allowed to update the dependency.
> TestNG parallel options seem to not be honored
> ----------------------------------------------
>
> Key: SUREFIRE-1179
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1179
> Project: Maven Surefire
> Issue Type: Bug
> Components: TestNG support
> Affects Versions: 2.18.1
> Environment: Windows 7 x64, Java 8 (1.8.0_60), TestNG v6.9.6, Maven
> Surefire version 2.18.1
> Reporter: Jeff Vincent
> Assignee: Tibor Digana
> Attachments: testng-test.zip
>
>
> I have some simple tests I'm trying to configure to run in parallel using
> Maven 3.3.3 and the latest versions of TestNG. I've set my POM file to the
> following:
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-surefire-plugin</artifactId>
> <version>2.18.1</version>
> <configuration>
> <parallel>methods</parallel>
> <threadCount>50</threadCount>
> </configuration>
> </plugin>
> When I run in parallel, I only get 10 threads no matter the setting and I can
> not change it. I've tried adding the annotation parameter to the method as
> well:
> @Test(dataProvider = "dataProvider", threadPoolSize = 50)
> Nothing seems to help. I have a simple project that illustrates what I'm
> seeing.
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