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Posted to dev@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2014/08/28 00:24:58 UTC
[jira] [Created] (FLINK-1073) SortGroup() does not sort Combiner
input
Fabian Hueske created FLINK-1073:
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Summary: SortGroup() does not sort Combiner input
Key: FLINK-1073
URL: https://issues.apache.org/jira/browse/FLINK-1073
Project: Flink
Issue Type: Bug
Components: Java API
Affects Versions: 0.7-incubating, 0.6.1-incubating
Reporter: Fabian Hueske
Priority: Critical
Flink supports sorted input for GroupReduce operators by calling for example
{code}
myData.groupBy(1).sortGroup(2, Order.ASCENDING).reduceGroup(new MyReducer());
{code}
This code will sort the input of the function {{MyReducer.reduce()}} on the third field.
However, the input of {{MyReducer.combine()}} is not sorted, which is an unexpected behavior, IMO.
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