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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/02/12 12:48:30 UTC

[GitHub] [flink] wangyang0918 opened a new pull request #11070: [FLINK-16013][core] Write and parse list config option correctly

wangyang0918 opened a new pull request #11070: [FLINK-16013][core] Write and parse list config option correctly
URL: https://github.com/apache/flink/pull/11070

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## What is the purpose of the change

Currently, if a config option is List type and written to a flink-conf.yaml, it could not be parsed correctly when reloaded from yaml resource. The root cause is we use List#toString to save into the yaml resource. However, when we want to parse a List from a string, we use semicolon to split the value.

When the configuration value is List type, we need to convert it to a semicolon-separated string in `Configuration#toMap`. And If we want to write the configuration to a yaml file, `Configuration#toMap` should be used to get all the keys and values.

## Brief change log

* Convert list to semicolon-separated string in `Configuration#toMap`

## Verifying this change

* The changes is covered by two new added tests

## Does this pull request potentially affect one of the following parts:

- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)

## Documentation

- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)

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