ADD: add replace.null.with.default for JdbcSink #1433
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SML0127
commented
Sep 10, 2024
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175
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| ) throws SQLException { | ||
| for (final String fieldName : fieldsMetadata.nonKeyFieldNames) { | ||
| final Field field = record.valueSchema().field(fieldName); | ||
| bindField(index++, field.schema(), valueStruct.get(field), fieldName); | ||
| if (this.replaceNullWithDefault) { | ||
| bindField(index++, field.schema(), valueStruct.get(field), fieldName); | ||
| } else { | ||
| bindField(index++, field.schema(), valueStruct.getWithoutDefault(field.name()), fieldName); | ||
| } |
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Problem
When used with Kafka connect, there are cases where null values in the record are changed to default values.
In kafka-connect library v3.5,
replace.null.with.defaultoption was added to prevent null values from always being replaced with default values when converting json.But, the column constraints related to default values still remain in the record, so null values are entered as default values when building insert/update queries in JdbcSink.
I don't think there is a problem with the current query build logic where null values are replaced with default values if there is a default value constraint. However, since this connector used with kafka-connect and kafka-connect supports replace.null.with.default, so I think it is necessary to support this option.
Solution
Add
replace.null.with.defaultoption to choose whether null values should be changed to default values or not.Does this solution apply anywhere else?
If yes, where?
Test Strategy
Testing done:
Release Plan