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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-12957) Segfault shadows failures in unit tests
Date Fri, 25 Nov 2016 13:02:58 GMT
Alex Petrov created CASSANDRA-12957:
---------------------------------------

             Summary: Segfault shadows failures in unit tests
                 Key: CASSANDRA-12957
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12957
             Project: Cassandra
          Issue Type: Bug
          Components: Testing
            Reporter: Alex Petrov


It looks like a segfaulting VM will shadow the CI results, for example [here|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12651-segfault-testall/1/],
I added a test that segfaults. 

Some times the tests with

{code}
Forked Java VM exited abnormally. Please note the time in the report does not reflect the
time until the VM exit.
{code}

error messages are disregarded or skipped due to the lack of information. Although if you
look closer in the [full log|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12651-segfault-testall/1/consoleFull]
you will see the actual segfault: 

{code}
12:51:30     [junit] # A fatal error has been detected by the Java Runtime Environment:
12:51:30     [junit] #
12:51:30     [junit] #  SIGSEGV (0xb) at pc=0x00007f7dac4b9900, pid=12587, tid=140177756509952
{code}

Test result is {{1 failure}} (which is kind of expected), but this failure resulted into skip
of all the other tests. 

Can we track the tests that were skipped not by test runner (reported by {{Failed: x, Skipped:
y}} in test results), but without "intention" (test runner crash, segfault etc) and maybe
add more infos on segfaults (possibly whole trace)? Might be there are unnoticed segfaults?

cc [~philipthompson]



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