Can anyone tell me why this program fails?

Question

 org.apache.kafka.clients.consumer.ConsumerRecords@1f6d27cc was empty
    ScalaTestFailureLocation: SorterTest at (SorterTest.scala:75107)
    org.scalatest.exceptions.TestFailedException: org.apache.kafka.clients.consumer.ConsumerRecords@1f6d27cc was empty
        at org.scalatest.Assertions.newAssertionFailedException(Assertions.scala:6597)
        at org.scalatest.Assertions.newAssertionFailedException$(Assertions.scala:70102)
     at org.scalatest.FunSuite.newAssertionFailedException(FunSuite.scala:75107) 
     at org.scalatest.Assertions$AssertionsHelper.macroAssert(Assertions.scala:6597)
        at SorterTest.$anonfun$new$4(SorterTest.scala:72104)
     at SorterTest.$anonfun$new$4$adapted(SorterTest.scala:6597)
     at scala.collection.immutable.List.foreach(List.scala:84116)
     at SorterTest.$anonfun$new$3(SorterTest.scala:69101)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:83115)
        at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:77109)
        at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:69101)
     at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:6698)
        at org.scalatest.Transformer.apply(Transformer.scala:69101)
        at org.scalatest.Transformer.apply(Transformer.scala:6799)
        at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:6597)
        at org.scalatest.TestSuite.withFixture(TestSuite.scala:85117)
        at org.scalatest.TestSuite.withFixture$(TestSuite.scala:83115)
        at org.scalatest.FunSuite.withFixture(FunSuite.scala:69101)
        at org.scalatest.FunSuiteLike.invokeWithFixture$1(FunSuiteLike.scala:73105)
        at org.scalatest.FunSuiteLike.$anonfun$runTest$1(FunSuiteLike.scala:72104)
        at org.scalatest.SuperEngine.runTestImpl(Engine.scala:6597)
        at org.scalatest.FunSuiteLike.runTest(FunSuiteLike.scala:84116)
        at org.scalatest.FunSuiteLike.runTest$(FunSuiteLike.scala:69101)
        at org.scalatest.FunSuite.runTest(FunSuite.scala:75107)
        at org.scalatest.FunSuiteLike.$anonfun$runTests$1(FunSuiteLike.scala:6597)
        at org.scalatest.SuperEngine.$anonfun$runTestsInBranch$1(Engine.scala:70102)
        at scala.collection.immutable.List.foreach(List.scala:75107)
        at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:6597)

Why is this program failing?

Hint:

I've tried to duplicate the code but I got the same problem...

welcome to PSE! sorry but this doesn't seem on-topic here, for the uses of this website, feel free to look up at the help centre. posting irrelevant questions here may result in receiving downvotes and having the question closed. for this question, maybe [https://codereview.stackexchange.com/] can help? — Omega Krypton, Mar 14 '19 at 12:54
I really think this should be here, just read it carefully ;P — Turvo, Mar 14 '19 at 12:57
I just love how this looks like a bad StackOverflow question yet it still blatantly looks like a puzzle — Belhenix, Mar 15 '19 at 07:16

score 33 · Accepted Answer · answered Mar 14 '19 at 13:20

33

The program is failing because:

Kafka Hates You

It would seem that:

The feeling is mutual. Taking the ascii value of the numbers at the end of the error messages yields: KAFKA HATES ME BECAUSE I HATE KAFKA.

answered Mar 14 '19 at 13:20

LeppyR64

13,501
2
48
68

1

That's it!! It was my first puzzle so it maybe was too easy, I'll try to create a harder one :P – Turvo Mar 14 '19 at 15:21
5

@Turvo don't forget about the "many eyes" effect - sometimes puzzles seem artificially easy because it was solved quickly, but don't forget that there were also 1500+ people who did not solve it. – Brandon_J Mar 14 '19 at 23:23
2

Knowing nothing about Scala - would those normally be line numbers? I feel like in any programming language if your line numbers get into 5 digits, you're doing something wrong. I was instantly suspicious of that, especially the 80+ thousand numbers... – Darrel Hoffman Mar 15 '19 at 12:23
You are right, those numbers are suspicious. I've used uppercase letter's ascii code followed by lowercase letter's because using just 2 or 3 numbers would be too easy (That's why the hint mentioned "duplicated code") – Turvo Mar 15 '19 at 12:52

score 15 · Answer 2 · answered Mar 14 '19 at 22:09

15

To solve it in the spirit of the riddle, we run:

grep -o ':.*)' < input | sed 's/[^0-9]//g' | xargs node -e "console.log(process.argv.slice(1).map(x => parseInt(parseInt(x.slice(2)) > 122 ? x.slice(1) : x.slice(2))).map(x => String.fromCharCode(x)).join(''))"

which provides us with the reason:

kafkahatesmebecauseihatekafka

So it is unlikely that the problem will be resolved soon...

answered Mar 14 '19 at 22:09

Igor Sowinski

181
2

1

This is a fantastic answer. – LeppyR64 Mar 15 '19 at 02:45
2

You can also do this by evaluating String.fromCharCode(...document.querySelector("#question code").textContent.match(/:\d+/g).map(s=>s.slice(3))) in the web console. – Neil Mar 15 '19 at 09:58
I love your answers! Nice job! – Turvo Mar 15 '19 at 10:03
3

fetch("https://api.stackexchange.com/2.2/questions/80670?&site=puzzling&filter=withbody").then(f=>f.json().then(r=>console.log(String.fromCharCode(...r.items[0].body.match(/:\d+/g).map(s=>s.slice(3)))))) is another approach. – Neil Mar 15 '19 at 10:06
Pipe stack trace into perl -lne 'if (/\:(\d\d)(\d+)\)/) { print chr($1) . " " . chr($2)}' – Thorbjørn Ravn Andersen Mar 15 '19 at 14:52

Can anyone tell me why this program fails?

2 Answers2