So I changed into 'graph' (database type) and tried.
And the error message says "The process cannot access the file because
another process has locked a portion of the file."
Thus, from the source section on json file, I have changed "lock" to false
instead true. NOW IT SEEMS RUNNING BUT FAILED
I have fixed *ETLPolitician.json* as follow:
{
> "config": {
> "log": "debug"
> },
> "begin": [
> ],
> "source": {
> "file": { "path": "./ETLPolitician.json", "lock": true }
> },
> "extractor": {
> "json": {}
> },
> "transformers": [
> { "document": { "class": "Politician"}}
> ],
> "loader": {
> "
