```ruby
class StartPostprocessingJob < Struct.new(:benchmark_execution_id)
  def perform
    benchmark_execution = BenchmarkExecution.find(benchmark_definition_id)
    benchmark_execution.start_postprocessing
  end
end```

Fix undefined variable within start postprocessing job
user
```ruby
class StartPostprocessingJob < Struct.new(:benchmark_execution_id)
  def perform
    benchmark_execution = BenchmarkExecution.find(benchmark_execution_id)
    benchmark_execution.start_postprocessing
  end
end```
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