Chesnay Schepler created FLINK-4773:
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Summary: Introduce an OperatorIOMetricGroup
Key: FLINK-4773
URL: https://issues.apache.org/jira/browse/FLINK-4773
Project: Flink
Issue Type: Improvement
Components: Metrics
Affects Versions: 1.1.2
Reporter: Chesnay Schepler
Assignee: Chesnay Schepler
Fix For: 1.2.0
Task related IO metrics (numBytesIn/Out) are not instantiated directly by the
task, but instead within the IOMetricGroup contained in the respective
TaskMetricGroup. They are then later accessed by relevant components, instead
of creating them themselves. This has the advantage that they can be accessed
from several places, and that they are guaranteed to always be instantiated
identically (without requiring static name constants).
I propose to do the same for operators.
This is also a prerequisite for FLINK-4733.
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