Re: [DISCUSS] Using timeouts in JUnit tests

2021-05-04 Thread Piotr Nowojski
Thanks for the response Dawid. In this case I don't see a reason for timeouts in JUnit. I agree with the previously mentioned points and I think it doesn't make sense to use them in order to limit test duration Piotrek wt., 4 maj 2021 o 17:44 Dawid Wysakowicz napisaƂ(a): > Hey all, > > Sorry

Re: [DISCUSS] Using timeouts in JUnit tests

2021-05-04 Thread Dawid Wysakowicz
Hey all, Sorry I've not been active in the thread. I think the conclusion is rather positive and we do want to depend more on the Azure watchdog and discourage timeouts in JUnit tests from now on. I'll update our coding guidelines accordingly. @Piotr Yes, this was a problem in the past, but that

Re: [DISCUSS] Using timeouts in JUnit tests

2021-05-04 Thread Piotr Nowojski
Hi, I'm ok with removing most or even all timeouts. Just one thing. Reason behind using junit timeouts that I've heard (and I was adhering to it) was that maven watchdog was doing the thread dump and killing the test process using timeout based on logs inactivity. Some tests were by nature prone

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-30 Thread Till Rohrmann
Yes, you can click on the test job where a test failed. Then you can click on 1 artifact produced (or on the overview page on the X published (artifacts)). This brings you to the published artifacts page where we upload for every job the logs. Cheers, Till On Fri, Apr 30, 2021 at 9:22 AM Dong

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-30 Thread Dong Lin
Thanks Till. Yes you are right. The INFO logging is enabled. It is just dumped to a file (the FileAppender) other than the console. There is probably a way to retrieve that log file from AZP. I will ask other colleagues how to get this later. On Thu, Apr 29, 2021 at 4:51 PM Till Rohrmann wrote:

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-29 Thread Till Rohrmann
I think for the maven tests we use this log4j.properties file [1]. [1] https://github.com/apache/flink/blob/master/tools/ci/log4j.properties Cheers, Till On Wed, Apr 28, 2021 at 4:47 AM Dong Lin wrote: > Thanks for the detailed explanations! Regarding the usage of timeout, now I > agree that

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-27 Thread Arvid Heise
Just to add to Dong Lin's list of cons of allowing timeout: - Any timeout value that you manually set is arbitrary. If it's set too low, you get test instabilities. What too low means depends on numerous factors, such as hardware and current utilization (especially I/O). If you run in VMs and the

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-27 Thread Dong Lin
There is one more point that may be useful to consider here. In order to debug deadlock that is not easily reproducible, it is likely not sufficient to see only the thread dump to figure out the root cause. We likely need to enable the INFO level logging. Since AZP does not provide INFO level

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-27 Thread Till Rohrmann
Assuming that not many tests deadlock I think it should be fine to simply let the build process deadlock. Even if multiple tests fail consistently, then one would see them one after another. That way we wouldn't have to build some extra tooling. Moreover, the behaviour would be consistent on the

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-26 Thread Robert Metzger
I was actually recently wondering if we shouldn't rather use timeouts more aggressively in JUnit. There was recently a case where a number of tests accidentally ran for 5 minutes, because a timeout was increased to 5 minutes. If we had a global limit of 1 minute per test, we would have caught this

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-26 Thread Till Rohrmann
+1. I think this rule makes a lot of sense. Cheers, Till On Mon, Apr 26, 2021 at 10:08 AM Arvid Heise wrote: > +1 from my side. > > We should probably double-check if we really need 4h timeouts on test tasks > in AZP. It feels like 2h be enough. > > On Mon, Apr 26, 2021 at 9:54 AM Dawid

Re: [DISCUSS] Using timeouts in JUnit tests

2021-04-26 Thread Arvid Heise
+1 from my side. We should probably double-check if we really need 4h timeouts on test tasks in AZP. It feels like 2h be enough. On Mon, Apr 26, 2021 at 9:54 AM Dawid Wysakowicz wrote: > Hi devs! > > I wanted to bring up something that was discussed in a few independent > groups of people in

[DISCUSS] Using timeouts in JUnit tests

2021-04-26 Thread Dawid Wysakowicz
Hi devs! I wanted to bring up something that was discussed in a few independent groups of people in the past days. I'd like to revise using timeouts in our JUnit tests. The suggestion would be not to use them anymore. The problem with timeouts is that we have no thread dump and stack traces of