MAX_LOG_MB = 1024

import hudson.model.*  
  
Hudson.instance.items.lastBuild.findAll{
    it && it.state == Run.State.BUILDING && it.logFile.size()/(1024 * 1024) > MAX_LOG_MB
}*.doStop()

hudson_kill_huge_build

Groovy script for hudson's scripler/script console (for latter case import line could be removed) aborting running builds with loo large logs.

Abort hudson builds with huge logs

log

Groovy