Till Rohrmann created FLINK-6768:
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Summary: Quadratic/Inefficient field lookup in
PojoSerializer#ensureCompatibility
Key: FLINK-6768
URL: https://issues.apache.org/jira/browse/FLINK-6768
Project: Flink
Issue Type: Improvement
Components: State Backends, Checkpointing, Type Serialization System
Affects Versions: 1.3.0, 1.4.0
Reporter: Till Rohrmann
Priority: Minor
In the {{PojoSerializer#ensureCompatibility}} method we call for each field in
the {{PojoSerializerConfigSnapshot}} the {{findField}} method which executes a
linear scan of the array of fields of the {{PojoSerializer}}. This effectively
has a quadratic runtime and could be done more efficiently. For example, we
could construct a {{HashMap}} containing the fields as keys and the index as
values. That way we would have a have a better lookup performance.
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