Grails - GPars - GORM: Duplicate Objects Persisting

Asked Jul 06 '17 at 12:56

Active Jul 06 '17 at 12:56

Viewed 83 times

I’m having an issue where duplicate records are being persisted using GPars. I have a feeling I’m not using GPars correctly. Does anyone see an issue with this example? This thread suggested using withNewSession, but I'm still seeing the same behavior.

def stageParticipantsForAllSurveys(Map<Survey,List<Participants>> surveys){
        GParsPool.withPool(15){
            surveys.eachParallel { survey, participants ->
                buildSurveyRoster(survey, participants)
            }
        }
    }

def buildSurveyRoster(survey, participants){
    GParsPool.withPool(5){
        participants.eachParallel{ participant ->
            stageParticipant(survey, participant)
        }
    }
}

def stageParticipant(survey, participant){
    Participant.withNewSession{
        new Participant(name: participant.name, surveyId: survey.id).save()
    }
}

asked Jul 06 '17 at 12:56

Bistro

too much parallelismus. do the `buildSurveyRoster` with plain `each` methods – injecteer Jul 06 '17 at 13:01
@Bistro I am also facing the same issue, were you able to resolve it? – Rax Dec 09 '17 at 19:19
My issue was that 2 instances of the app were running, which caused the duplicates. I configured Quartz clustering to resolve – Bistro Dec 12 '17 at 15:10

Grails - GPars - GORM: Duplicate Objects Persisting

0 Answers0