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https://issues.apache.org/jira/browse/FLINK-11003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16698881#comment-16698881
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ASF GitHub Bot commented on FLINK-11003:
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KarmaGYZ opened a new pull request #7174: [FLINK-11003][docs] Fix mistake in
java_lambda doc
URL: https://github.com/apache/flink/pull/7174
## What is the purpose of the change
This pull request fix a mistake code in the Java Lambda Expressions doc
## Brief change log
- Change the generic type in MapFunction of MyTuple2Mapper class
## Verifying this change
This change is a docs cleanup.
## 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)`: no
- 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
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> Document of Java Lambda Expressions has a mistake
> -------------------------------------------------
>
> Key: FLINK-11003
> URL: https://issues.apache.org/jira/browse/FLINK-11003
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Reporter: Yangze Guo
> Priority: Minor
> Labels: pull-request-available
>
> Documentation of *[Java Lambda
> Expressions|https://ci.apache.org/projects/flink/flink-docs-master/dev/java_lambdas.html]*
> has a mistake which may cause confusion.
> In the last code block, it presents some way to solve type missing problem.
> In 15 line:
> public static class MyTuple2Mapper extends MapFunction<Integer, Integer> {
> @Override
> public Tuple2<Integer, Integer> map(Integer i)
> { return Tuple2.of(i, i); }
> }
> The second generic type in MapFunction should be Tuple2<Integer, Integer>
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