Trying to work with Amazon AWS (especially s3a buckets) from Spark v2.4.   

I understand that I need to add logging options for Amazon to see what error is 

So I added to `spark/conf/log4.properties` file:

```
log4j.logger.com.amazonaws=DEBUG
log4j.logger.org.apache.hadoop.fs.s3a=DEBUG
log4j.logger.com.amazonaws.request=DEBUG
log4j.logger.org.apache.http=DEBUG
log4j.logger.org.apache.http.wire=ERROR

```

but I don't see those logs anywhere :( 

What is correct settings to log Amazon connection/process/events from Spark?

**P.S. Spark itself + Hadoop running in EC2 instance - I managed to configure them by myself. It's not an Amazon variant of Spark - it standalone instance that I installed myself.** Sorry for confusion with AWS -it's not a *Amazon managed instance* - it's my own setup