Fabian Hueske created FLINK-10359:
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Summary: Scala example in DataSet docs is broken
Key: FLINK-10359
URL: https://issues.apache.org/jira/browse/FLINK-10359
Project: Flink
Issue Type: Bug
Components: Documentation
Affects Versions: 1.6.0, 1.5.3, 1.7.0
Reporter: Fabian Hueske
The Scala example of
[https://ci.apache.org/projects/flink/flink-docs-release-1.6/dev/batch/dataset_transformations.html#combinable-groupreducefunctions]
is broken.
The {{asScala}} and the {{reduce}} call fetch the Java {{Iterator}} which may
only fetched once.
{quote}The Iterable can be iterated over only once. Only the first call to
'iterator()' will succeed.{quote}
While we are on it, it would make sense to check the other examples as well.
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