Stephan Ewen created FLINK-19087:
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Summary: ReaultPartitionWriter should not expose subpartition but
only subpartition-readers
Key: FLINK-19087
URL: https://issues.apache.org/jira/browse/FLINK-19087
Project: Flink
Issue Type: Sub-task
Components: Runtime / Network
Reporter: Stephan Ewen
Assignee: Stephan Ewen
Fix For: 1.12.0
The {{ResultPartitionWiter}} currently gives arbitrary access to the
sub-partitions.
These subpartitions may not always exist directly, such as in a sort based
shuffle.
Necessary is only the access to a reader over a sub-partition's data (the
ResultSubpartitionView).
In the spirit of minimal scope of knowledge, the methods should be scoped to
return readers, not the more general subpartitions.
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