GitHub user bowenli86 opened a pull request:
https://github.com/apache/flink/pull/5356
[FLINK-8364][state backend] Add iterator() to ListState which returns empty
iterator when it has no value
## What is the purpose of the change
Add iterator() to ListState which returns empty iterator when it has no
value
## Brief change log
Add iterator() to ListState which returns empty iterator when it has no
value
## Verifying this change
This change added tests and can be verified by extending
`StateBackendTestBase#testListStateAPIs()`
## Does this pull request potentially affect one of the following parts:
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes)
## Documentation
- Does this pull request introduce a new feature? (yes)
- If yes, how is the feature documented? (docs / JavaDocs)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bowenli86/flink FLINK-8364
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5356.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #5356
commit fe3ae4e4798fb3f1a440dee737298718143edaf3
Author: Bowen Li
Date: 2018-01-25T07:01:46Z
[FLINK-8364] Add iterator() to ListState which returns empty iterator when
it has no value
commit c6a3e6bdb276b910e679bfa12a1abadaf2c9fcf8
Author: Bowen Li
Date: 2018-01-25T07:41:46Z
add doc and unit test
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