LONG RANT AHEAD!

In my workplace (dev company) I am the only dev using Linux on my workstation. I joined project XX, a senior dev onboarded me. Downloaded the code, built the source, launched the app,.. BAM - an exception in catalina.out. ORM framework failed to map something.

mvn clean && mvn install

same thing happens again. I address this incident to sr dev and response is "well.... it works on my machine and has worked for all other devs. It must be your environment issue. Prolly linux is to blame?" So I spend another hour trying to dig up the bug. Narrowed it down to a single datamodel with ORM mapping annotation looking somewhat off. Fixed it.

mvn clean && mvn install

the app now works perfectly. Apparently this bug has been in the codebase for years and Windows used to mask it somehow w/o throwing an exception. God knows what undefined behaviour was happening in the background...

Months fly by and I'm invited to join another project. Sounds really cool! I get accesses, checkout the code, build it (after crossing the hell of VPNs on Linux). Run component 1/4 -- all goocy. run component 2,3/4 -- looks perfect. Run component 4/4 -- BAM: LinkageError. Turns out there is something wrong with OSGi dependencies as ClassLoader attempts to load the same class twice, from 2 different sources. Coworkers with Windows and MACs have never seen this kind of exception and lead dev replies with "I think you should use a normal environment for work rather than playing with your Linux". Wtf... It's java. Every env is "normal env" for JVM! I do some digging. One day passes by.. second one.. third.. the weekend.. The next Friday comes and I still haven't succeeded to launch component #4. Eventually I give up (since I cannot charge a client for a week I spent trying to set up my env) and walk away from that project. Ever since this LinkageError was always in my mind, for some reason I could not let it go. It was driving me CRAZY! So half a year passes by and one of the project devs gets a new MB pro. 2 days later I get a PM: "umm.. were you the one who used to get LinkageError while starting component #4 up?". You guys have NO IDEA how happy his message made me. I mean... I was frickin HIGH: all smiling, singing, even dancing behind my desk!! Apparently the guy had the same problem I did. Except he was familiar with the project quite well. It took 3 more days for him to figure out what was wrong and fix it. And it indeed was an error in the project -- not my "abnormal Linux env"! And again for some hell knows what reason Windows was masking a mistake in the codebase and not popping an error where it must have popped. Linux on the other hand found the error and crashed the app immediatelly so the product would not be shipped with God knows what bugs...

I do not mean to bring up a flame war or smth, but It's obvious I've kind of saved 2 projects from "undefined magical behaviour" by just using Linux. I guess what I really wanted to say is that no matter how good dev you are, whether you are a sr, lead or chief dev, if your coworker (let it be another sr or a jr dev) says he gets an error and YOU cannot figure out what the heck is wrong, you should not blame the dev or an environment w/o knowing it for a fact. If something is not working - figure out the WHATs and WHYs first. Analyze, compare data to other envs,... Not only you will help a new guy to join your team but also you'll learn something new. And in some cases something crucial, e.g. a serious messup in the codebase.

C has too much undefined behaviour because the standards comittee was being lazy and slapped that on a lot of issues that ought to have been implementation defined instead.

The most ridiculous example for UB: An unmatched ' or " character is encountered on a logical source line during tokenization.

Like WTF, that should be a compile time error, and it's easy to detect.

The tons of undefined behaviour in C that ought to have been implementation defined instead, and increasingly sadistic compiler writers on the other side.

Like signed integer overflow that should just do what the underlying machine does, i.e. in practice, wrap around two's complement.

But the wierdest UB is when a C source code line has a non-matching ' or ". WTF, this should have been a compile time error!

Undefined behaviours in C deserve a place in hell..

MacBook/OSX

Have used all kinds of OSes and computers. Nothing sucked the productivity out of me as much a company provided MacBook. Some issues were related to the company setup (vpn issues after sleep, jamf botched app installs). But most of the day to day work was just due to crappy key handling. Lots of shortcuts that work everywhere don't (think all the alt combos in terminal). Common things require combos and using the actual keys (like home and end) on an external keyboard have undefined behaviour. Out of the box it does not even have decent window management, this means that a third party tool has to provide the shortcuts and they clash with a few programs.

Thank god I can use Linux now to develop for Linux.

Following my first rant, my boss had the brilliant idea of running the old and the new architecture in parallel. I had advised that it won’t be ideal since the same Scala code was ingesting into 2 different Kinesis streams and one was running an old KCL written in Java where as other was consumed by a Firehose delivery stream(eventually we will be ingesting it into Firehose directly). I had told few manual + automated tests on Code as well as from a functionality of the new architecture and a set of tests for checking the integration of the new Producer code with Consumer.

The statement I got from my boss was “This is the test, we test it on production in parallel”. My boss had a brilliant idea to fucking test the new code on the production directly but running them in parallel without accounting for undefined behaviour it might cause in the current production system. I mean my boss should get a Nobel peace prize for shattering our mental peace.

Anywho, we started the deployment today at 5AM in the morning. I had all the aws services deployed. Was just waiting to deploy the new Collector code which we did at 5AM. Immediately after 5 minutes the system went bonkers, there was fire, blood, demons and I was smoking a cigarette with the biggest “I told you so smile” on my face. I’ve just written an email to my boss and have told him calmly that “Listen motherfucker, 90 percent of the software companies aren’t idiots to focus on testing and quality. We need to start spending time on testing and quality else we’ll again be in the same soup after few weeks again”.waiting for his reply

* Customer reports bug.
* I fix the bug.
* This highlights another issue that I haven't got enough resources to fix.
* I revert the fix.
* <insert hacky workaround here>

We have code that invokes undefined behaviour (freeing memory twice), but somehow people have managed to build around it and now it depends upon it to work.

FML.