YongjinZhou opened a new pull request #13297:
URL: https://github.com/apache/flink/pull/13297
## What is the purpose of the change
This pull request correct demo error
## Brief change log
tableEnv.connect(new FileSystem("/path/to/file")
->
tableEnv.connect(new FileSystem().path("/path/to/file"))
DataTypes.LONG()
->DataTypes.BIGINT()
## Verifying this change
This change added tests and can be verified as follows:
before

after

## Does this pull request potentially affect one of the following parts:
## Documentation
- Does this pull request introduce a new feature? (yes / no) no
- If yes, how is the feature documented? (not applicable / docs / JavaDocs
/ not documented)
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