[jbehave-user] empty output files when using multiple threads

[Roy de Kleijn]

Hi,

I noticed something weird.

When I execute multiple story files in multiple threads, then some of the 
output files are empty.
When I execute multiple story files in a single thread, then all the output 
files are populated.

Some code:
pom.xml (to define the threads)
 <plugin>
        <groupId>org.jbehave</groupId>
        <artifactId>jbehave-maven-plugin</artifactId>
        <version>4.0-beta-1</version>
        <executions>
          <execution>
            <id>run-stories-as-embeddables</id>
            <phase>integration-test</phase>
            <configuration>
              <includes>
                <include>${embeddables}</include>
              </includes>
              <ignoreFailureInStories>false</ignoreFailureInStories>
              <ignoreFailureInView>true</ignoreFailureInView>
              <metaFilters>
                <metaFilter>+group ${group}</metaFilter>
              </metaFilters>
              <storyTimeoutInSecs>9000</storyTimeoutInSecs>
              <threads>1</threads> //or 2
            </configuration>
            <goals>
              <goal>run-stories-as-embeddables</goal>
              <goal>unpack-view-resources</goal>
            </goals>
          </execution>
          <execution>
            <id>unpack-view-resources</id>
            <phase>process-resources</phase>
            <goals>
              <goal>unpack-view-resources</goal>
            </goals>
            <configuration>
              <viewDirectory>target/jbehave/view</viewDirectory>
            </configuration>
          </execution>
        </executions>
        <dependencies>
          <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
          </dependency>
        </dependencies>
      </plugin>


my reporterconfig:
.useStoryReporterBuilder(
            new StoryReporterBuilder()
                .withCodeLocation(
                    CodeLocations
                        .codeLocationFromClass(embeddableClass))
                .withDefaultFormats()
                .withFormats(HTML, XML))
        .useParameterConverters(parameterConverters);


Has anybody noticed this before?
Do I need to configure something extra when using multiple threads? (in regards 
to the reporting?)

I hope to get this sorted soon, as this gives problems on our jenkins machine 
(we have flaky test outputs)


Thanks in advance,
Roy