Gabor Gevay created FLINK-3321:
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Summary: TupleSerializerBase.getLength should know the length when
all fields know it
Key: FLINK-3321
URL: https://issues.apache.org/jira/browse/FLINK-3321
Project: Flink
Issue Type: Improvement
Components: Java API
Reporter: Gabor Gevay
Priority: Minor
TupleSerializerBase.getLength currently always returns -1, but it could
actually know the length, when all the field serializers know their lengths
(since no null can appear anywhere in Tuples, nor can a subclass of Tuple with
additional fields appear).
(The serializer knowing the exact size has various performance benefits, for
example see FixedLengthRecordSorter, or
CompactingHashTable.getInitialTableSize.)
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