[jira] [Updated] (KUDU-2112) Python tests don't retain server logs

["Mike Percy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Percy updated KUDU-2112:
-----------------------------
    Labels: newbie  (was: )

> Python tests don't retain server logs
> -------------------------------------
>
>                 Key: KUDU-2112
>                 URL: https://issues.apache.org/jira/browse/KUDU-2112
>             Project: Kudu
>          Issue Type: Bug
>          Components: python, test
>    Affects Versions: 1.4.0
>            Reporter: Mike Percy
>              Labels: newbie
>
> The python tests don't retain the server logs. According to https://github.com/apache/kudu/blob/master/python/kudu/tests/common.py it looks like we are sending the logs to stderr but then we throw away the output. The output doesn't end up in the python3_client.log, even though build-and-test.sh has this:
> {code}
>   # Run the Python tests.
>   if ! python setup.py test \
>       --addopts="kudu --junit-xml=$TEST_LOGDIR/python3_client.xml" \
>       2> $TEST_LOGDIR/python3_client.log ; then
>     EXIT_STATUS=1
>     FAILURES="$FAILURES"$'Python 3 tests failed\n'
>   fi
> {code}
> This lack of logs makes it hard to debug python test failures, especially when they happen on pre-commit builds in Jenkins.
> I also wonder if we are buffering stderr and if it's too large for the buffer then the daemon can block. There was a hang on one of the python tests and I don't know why; this is just speculation. It could have also been some kind of server or client deadlock.



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