Jingsong Lee created FLINK-11701:
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Summary: Introduce an abstract set of data formats
Key: FLINK-11701
URL: https://issues.apache.org/jira/browse/FLINK-11701
Project: Flink
Issue Type: New Feature
Components: Table API & SQL
Reporter: Jingsong Lee
Assignee: Jingsong Lee
Blink uses an abstract set of data formats to make internal calculations use
the binary format as much as possible. This minimizes the serialization
overhead and java object overhead.
It includes:
BaseRow <=> Row
BaseMap <=> Java Map
BaseArray <=> Java array
BaseString <=> Java String
Decimal <=> BigDecimal //Scale of this object is specified by the user, not
automatically determined(like BigDecimal).
int <=> Date //Flink used to use int in the calculation, but the remaining in
Row is still Date, we will change it completely.
int <=> Time
long <=> Timestamp
byte[] <=> byte[]
BaseGeneric <=> T (GenericRelDataType, we don't know it, let user define
serializer)
primitive type keep same, but use less boxed type.
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