unable to read certain execution data file

[r.anee...@gmail.com]

Hello All,

We are evaluating Jacoco for our code coverage analysis. During our test phase, we are generating the Jacoco.exec file to see the different classes/Methods covered. At the end of the test phase, when I want to merge the different Jacoco (from different testers), I observe that out of 6 testers, for 2 testers, the Jacoco.exec file seems to be corrupted !!!!


I am not sure why this issue occurs

What I tried till now to solve this:

(1) I tried use the latest version of Jacoco and the older version - but this did not help

(2) I tried to re-copy the Jacoco from the eclipse installation and try - no breakthrough

(3) For the 2 testers, for whom the Jacoco.exec file was corrupted, I tried to view the HTML report individually - I see this is not possible. For other testers, its fine

Points to Note

(a) I did a single eclipse installation and then installed the software I am testing. Then I made different copies of this folder, for the 6 testers who are testing the software - And we observe that this issue is seen only for 2 testers

(b) 10 days back, when I tried to consolidate the jacoco.exec from 6 testers, there was no issue

It would be great if there is any help

Many thanks in advance

thank you
Aneesh Kumar

[Marc R. Hoffmann]

Hi Aneesh,

can you please provide

1) the specific error message and exception trace and
2) a corrupted exec file?

Many thanks,
-marc

[Aneesh Kumar]

Hi Marc,

I have mailed on your email address - hoff...@mountainminds.com

replying to you incase you did not notice it 

Aneesh Kumar
+919740866115

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[r.anee...@gmail.com]

Hi All,

I think I found the probable reason for this issue - the reason could be below

**** this is the reply from Marc **********

........The files contain multiple sessions, written one after the other. At some point a sessions is not dumped completely (some bytes missing at the end of a record). It looks like the JVM was terminated before the data could be written properly. E.g. killing a process might lead to this.

**** this is the reply from Marc **********

To avoid this situation in future, I am taking a regular back up of the jacoco.exec file, using a work around.

I am using a batch file, with the below lines to launch the eclipse
ren "jacoco.exec" "jacoco - %date:/=-% %time::=-%.exec"
PAUSE
START eclipse.exe

With this, every time I launch the batch file, the earlier jacoco file will be appended with the time stamp :-)

Also, I am minimizing the risk of the jacoco.exec file getting bloated


I would like to thank Marc for the time and advice

PS: What I learnt: Do no kill the eclipse.exe file


Thank you
Aneesh Kumar