Thanks guys. I’ve made some progress.
It looks my problem was related to
[https://github.com/snowplow/snowplow/wiki/Troubleshooting#etl-failure](http://Shredding is failing with File does not exist)
I took snowplow-emr-etl-runner 2-3 versions back
./snowplow-emr-etl-runner -d --config config/config.yml --resolver iglu_resolver.json --skip shred stage
and it works!!!
Now I am going to deal with storing data to redshift. 