Report generation fails

[Julien Tognazzi]

Hello all,

I have a simulation using a csv file for feeding the requests which was working (from Idea).

I modified it to only have 10 urls in the csv feeder and then used the .circular.

The simulation ran ok, but the report generation failed:
Simulation simulations.OpenLogReplayTest started...
Simulation simulations.OpenLogReplayTest completed in 180 seconds
Parsing log file(s)...
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 179 out of bounds for length 179
    at io.gatling.charts.stats.buffers.SessionDeltaBuffer.addStart(SessionDeltaPerSecBuffers.scala:37)
    at io.gatling.charts.stats.buffers.SessionDeltaPerSecBuffers.addSessionBuffers(SessionDeltaPerSecBuffers.scala:95)
    at io.gatling.charts.stats.buffers.SessionDeltaPerSecBuffers.addSessionBuffers$(SessionDeltaPerSecBuffers.scala:91)
    at io.gatling.charts.stats.ResultsHolder.addSessionBuffers(ResultsHolder.scala:26)
    at io.gatling.charts.stats.ResultsHolder.addUserRecord(ResultsHolder.scala:40)
    at io.gatling.charts.stats.LogFileReader.$anonfun$secondPass$1(LogFileReader.scala:173)
    at io.gatling.charts.stats.LogFileReader.$anonfun$secondPass$1$adapted(LogFileReader.scala:166)
    at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:563)
    at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:561)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1288)
    at io.gatling.charts.stats.LogFileReader.secondPass(LogFileReader.scala:166)
    at io.gatling.charts.stats.LogFileReader.$anonfun$resultsHolder$1(LogFileReader.scala:186)
    at io.gatling.charts.stats.LogFileReader.parseInputFiles(LogFileReader.scala:65)
    at io.gatling.charts.stats.LogFileReader.<init>(LogFileReader.scala:186)
    at io.gatling.app.RunResultProcessor.initLogFileReader(RunResultProcessor.scala:52)
    at io.gatling.app.RunResultProcessor.processRunResult(RunResultProcessor.scala:34)
    at io.gatling.app.Gatling$.start(Gatling.scala:93)
    at io.gatling.app.Gatling$.fromMap(Gatling.scala:40)
    at Engine$.delayedEndpoint$Engine$1(Engine.scala:11)
    at Engine$delayedInit$body.apply(Engine.scala:4)
    at scala.Function0.apply$mcV$sp(Function0.scala:39)
    at scala.Function0.apply$mcV$sp$(Function0.scala:39)
    at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:17)
    at scala.App.$anonfun$main$1(App.scala:76)
    at scala.App.$anonfun$main$1$adapted(App.scala:76)
    at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:563)
    at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:561)
    at scala.collection.AbstractIterable.foreach(Iterable.scala:919)
    at scala.App.main(App.scala:76)
    at scala.App.main$(App.scala:74)
    at Engine$.main(Engine.scala:4)
    at Engine.main(Engine.scala)

I also try to generate the report from the simulation log with the gatling bundle and I have the same error.

/gatling-charts-highcharts-bundle-3.6.1/bin/gatling.sh -ro <path to result folder>

Should I open a github issue ?

I have attached the simulation.log if someone wants to have a look.

and the Simulation looks like this:
package simulations

import baseConfig.BaseSimulation
import io.gatling.core.Predef._
import io.gatling.http.Predef._

import scala.concurrent.duration.DurationInt

class OpenLogReplayTest extends BaseSimulation {

//val csvFeeder = csv("data/direct_request.csv")
val csvFeeder = csv("data/overviews.csv").circular

val scn = scenario("Log Replay")
.feed(csvFeeder)
.exec(http("${url}")
.get( baseURL + "${url}"))
// .pause(1.seconds)

setUp(
// generate an open workload injection profile
// with levels of 10, 15, 20, 25 and 30 arriving users per second
// each level lasting 10 seconds
// separated by linear ramps lasting 10 seconds
scn.inject(
incrementUsersPerSec(5)
.times(12)
.eachLevelLasting(10.seconds)
.separatedByRampsLasting(10.seconds)
.startingFrom(10)
).protocols(httpConf)
).throttle(reachRps(35) in (30.seconds),holdFor(150.seconds))
.assertions(global.responseTime.percentile(90).lt(2000 ))
}

Regards.

[Stéphane LANDELLE]

Hello,

Looks like a bug. Will investigate.

Thanks for reporting!

--

Stéphane Landelle Chief Technical Officer

slan...@gatling.io gatling.io

   

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[Julien Tognazzi]

hum, weird...

I started the simulation again and the report could be generated...

but then after running it a third time it failed again.

[Stéphane LANDELLE]

See https://github.com/gatling/gatling/issues/4137

--

Stéphane Landelle Chief Technical Officer

slan...@gatling.io gatling.io

   

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[Julien Tognazzi]

Woah !

that was very quick !

thank you