jacoco merge error - Unable to read execution data file
rama.p...@jda.com
We want to merge execution data files generated on different envs (one generated on Linux for selenium and other generated on Windows for jUnits) to get a combined coverage report. We are using ANT, "jacoco:merge" is being run on Windows. We have copied jacoco.exec from Linux to Windows and trying to merge the files.
Marc R. Hoffmann
exec files are platform independent. Note however, that they might be
incompatible between different JaCoCo releases, see
https://github.com/jacoco/jacoco/wiki/ExecFileVersions.
It might be helpful if you provide the full errer message ans stack trace.
Regards,
-marc
rama.p...@jda.com
> Can we copy jacoco.exec ( execution data file) generated on linux to Windows and use it as input for merge ANT target? We are getting cannot read file(execution data file copied from linux) error while merge. Is there any way to fix this? More details below...
>
> We want to merge execution data files generated on different envs (one generated on Linux for selenium and other generated on Windows for jUnits) to get a combined coverage report. We are using ANT, "jacoco:merge" is being run on Windows. We have copied jacoco.exec from Linux to Windows and trying to merge the files.
Hi Marc,
Here is the complete stacktrace
[jacoco:merge] Loading execution data file E:\test\jacoco.exec
BUILD FAILED
E:\test\build.xml:571: Unable to read E:\test\jacoco.exec
at org.jacoco.ant.MergeTask.load(MergeTask.java:87)
at org.jacoco.ant.MergeTask.execute(MergeTask.java:67)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExe
cutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
at org.apache.tools.ant.Main.runBuild(Main.java:854)
at org.apache.tools.ant.Main.startAnt(Main.java:236)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:285)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:112)
Caused by: java.io.IOException: Unknown block type a.
at org.jacoco.core.data.ExecutionDataReader.readBlock(ExecutionDataReade
r.java:116)
at org.jacoco.core.data.ExecutionDataReader.read(ExecutionDataReader.jav
a:87)
at org.jacoco.core.tools.ExecFileLoader.load(ExecFileLoader.java:59)
at org.jacoco.ant.MergeTask.load(MergeTask.java:85)
... 17 more
Below is my ANT target. In this mod1 jacoco.exec file was copied from a linux box and mod2 jacoco.exec files were generated on same windows m/c where merge target is run.
<target name="merge-all-modules">
<jacoco:merge destfile="${mytest.dir}/target/merged.exec">
<fileset dir="${mytest.dir}/target/mod2" includes="jacoco.exec" />
<fileset dir="${mytest.dir}/target/mod1" includes="*.exec" />
</jacoco:merge>
<jacoco:report>
<executiondata>
<file file="${mytest.dir}/target/merged.exec" />
</executiondata>
<structure name="MyTestPrj">
<group name="module1">
<classfiles>
<fileset dir="${mytest.dir}/output/classes"/>
</classfiles>
<sourcefiles encoding="UTF-8">
<fileset dir="${mytest.dir}/source"/>
</sourcefiles>
</group>
<group name="module2">
<classfiles>
<fileset dir="${mytest.dir}/output/mod1classes"/>
</classfiles>
<sourcefiles encoding="UTF-8">
<fileset dir="${mytest.dir}/mod1src"/>
</sourcefiles>
</group>
</structure>
<html destdir="${mytest.dir}/target/output" />
</jacoco:report>
</target>
Marc R. Hoffmann
thanks for the stack trace! The trace indicates that
"E:\test\jacoco.exec" is not a valid execution data file or it has been
corrupted somehow.
If you can provide this file I can have a look what the issue is. You
can also inspect the file yourself using our code example here:
http://www.eclemma.org/jacoco/trunk/doc/examples/java/ExecDump.java
Regards,
-marc
Rama
Exception in thread "main" java.io.IOException: Unknown block type a.
at org.jacoco.core.data.ExecutionDataReader.readBlock(ExecutionDataReader.java:116)
at org.jacoco.core.data.ExecutionDataReader.read(ExecutionDataReader.java:87)
at com.jda.nextgen.ua.widthndepth.JacocoDiag.dump(JacocoDiag.java:64)
at com.jda.nextgen.ua.widthndepth.JacocoDiag.execute(JacocoDiag.java:38)
at com.jda.nextgen.ua.widthndepth.JacocoDiag.main(JacocoDiag.java:89)
rama.p...@jda.com
> I tried to verify using example your provided and the problem is "Unknown block type a". What does this mean?
>
>
> Exception in thread "main" java.io.IOException: Unknown block type a.
> at org.jacoco.core.data.ExecutionDataReader.readBlock(ExecutionDataReader.java:116)
> at org.jacoco.core.data.ExecutionDataReader.read(ExecutionDataReader.java:87)
>
>
>
>
Marc R. Hoffmann
at all.
How exactly do you create the file?
rama.p...@jda.com
I created this file passing -javaagent:/usr1/vendor/jacoco/lib/jacocoagent.jar=destfile=/usr1/jacococoverage/jacoco.exec,includes=com.myapp.* as javaopts to catalina.bat and this file was written when the server is stopped.
