Riccardo Diomedi created FLINK-3630:
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Summary: Little mistake in documentation
Key: FLINK-3630
URL: https://issues.apache.org/jira/browse/FLINK-3630
Project: Flink
Issue Type: Bug
Components: DataSet API, Documentation
Affects Versions: 1.0.0
Reporter: Riccardo Diomedi
Priority: Minor
in section "GroupCombine on a Grouped DataSet" of the following link:
https://ci.apache.org/projects/flink/flink-docs-release-1.0/apis/batch/dataset_transformations.html#groupreduce-on-grouped-dataset
there is a little mistake in java code in both combine and reduce method(it's
the same mistake). The variable "word" is defined in the scope of the for loop
so it cannot be used in collect method.
Possible solution could be to initialise the variable before the for and assign
a value inside the for.
Something like:
int count = 0;
String word;
for (String record : words) {
word = record;
count++;
}
out.collect(new Tuple2(word, count));
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