Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/1524#issuecomment-183288223
Thank you.
- ` ./bin/yarn-session.sh -tm 1024 -n 7 -s 2 -Dfs.default-scheme=hdfs:///`
is now working
- Setting the fs.default-scheme to `thisIsWrong` and trying to read from
`/user/robert/trashaa` leads to:
```
Caused by: java.io.IOException: The URI '/user/robert/trashaa' is invalid.
Hint: Did you specify only the PATH to your file (without the scheme) but
forgot the initial slash (/) in the beginning???
```
I don't think putting three question marks there is a good idea. I think it
implicates that the user is too stupid to properly specify a file path.
And I would like to see the default scheme there. Right now, its quite hard
to see what's wrong.
the error reporting for the default scheme: `thisIsWrong:///` and the path
`/user/robert/trashaa` is good again:
```
Caused by: java.io.IOException: No file system found with scheme
thisIsWrong, referenced in file URI 'thisIsWrong:/user/robert/trashaaa'.
```
I would expect a similar error reporting for `fs.default-scheme=thisIsWrong`
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