Nico Kruber created FLINK-9435:
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Summary: Remove per-key selection Tuple instantiation via
reflection in KeySelectorUtil#ComparableKeySelector
Key: FLINK-9435
URL: https://issues.apache.org/jira/browse/FLINK-9435
Project: Flink
Issue Type: Improvement
Components: Streaming
Affects Versions: 1.4.2, 1.4.1, 1.3.3, 1.3.2, 1.4.0, 1.3.1, 1.3.0, 1.5.0,
1.6.0
Reporter: Nico Kruber
Assignee: Nico Kruber
Every {{ComparableKeySelector#getKey()}} call currently creates a new tuple
from {{Tuple.getTupleClass(keyLength).newInstance();}} which seems expensive.
Instead, we could get a template tuple and use {{Tuple#copy()}} which copies
the right sub-class in a more optimal way.
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