Retrieves an existing job definition.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/glue/get-job.html
| aws glue get-job --job-name test_trunc |
| python - "ImportError: No module named pyRserve" when running AWS Glue job - Stack Overflow : http://stackoverflow.com/questions/48367110/importerror-no-module-named-pyrserve-when-running-aws-glue-job |