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https://issues.apache.org/jira/browse/NIFI-3861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Kawamura reopened NIFI-3861:
---------------------------------
Sorry for reopening this issue since I found I used a wrong constant while
refactoring existing code. Although this mistake is harmless, I'd like it to be
fixed. Please review [PR 1782|https://github.com/apache/nifi/pull/1782]. Thank
you!
> AvroReader logical date and time conversion does not work with nullable type
> ----------------------------------------------------------------------------
>
> Key: NIFI-3861
> URL: https://issues.apache.org/jira/browse/NIFI-3861
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Koji Kawamura
> Assignee: Koji Kawamura
> Attachments: NIFI-3861.xml
>
>
> A Date field can be defined as logical 'date' type in Avro schema like this,
> the value is stored as int physically, but logically annotated this is a
> date. The stored value represents days after Unix epoch (1970-01-01):
> {code}
> {"name":"date","type":{"type":"int","logicalType":"date"}}
> {code}
> When AvroReader reads the logical date value, it converts the int back to
> java.sql.Date at
> [AvroTypeUtil.normalizeValue|https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-extension-utils/nifi-record-utils/nifi-avro-record-utils/src/main/java/org/apache/nifi/avro/AvroTypeUtil.java#L441]
> method. However, if the field is also a nullable (union with null), the
> conversion is skipped and the original int is returned.
> Then the int will be treated as milliseconds from Unix epoch by other
> RecordWriter such as JsonRecordSetWriter.
> Here is a reproducible flow:
> {code: title=input.json}
> {"date": "2017-05-10", "time": "19:55:34"}
> {code}
> {code}
> input.json
> -> ConvertRecord (JsonTreeReader/AvroRecordSetWriter)
> -> ConvertRecord (AvroRecordReader/JsonRecordSetWriter): this avro reader
> fails to convert with a nullable logical date.
> {code}
> {code: title=result-not_null}
> [{"date":"2017-05-10","time":"19:55:34"}]
> {code}
> {code: title=result-nullable}
> [{"date":"1970-01-01","time":"19:55:34"}]
> {code}
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