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https://issues.apache.org/jira/browse/KAFKA-5972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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siva santhalingam reassigned KAFKA-5972:
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Assignee: siva santhalingam
> Flatten SMT does not work with null values
> ------------------------------------------
>
> Key: KAFKA-5972
> URL: https://issues.apache.org/jira/browse/KAFKA-5972
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 0.11.0.0, 0.11.0.1
> Reporter: Tomas Zuklys
> Assignee: siva santhalingam
> Priority: Minor
> Labels: easyfix, patch
> Attachments: kafka-transforms.patch
>
>
> Hi,
> I noticed a bug in Flatten SMT while doing tests with different SMTs that are
> provided out-of-box.
> Flatten SMT does not work as expected with schemaless JSON that has
> properties with null values.
> Example json:
> {code}
> {A={D=dValue, B=null, C=cValue}}
> {code}
> The issue is in if statement that checks for null value.
> Current version:
> {code}
> for (Map.Entry<String, Object> entry : originalRecord.entrySet()) {
> final String fieldName = fieldName(fieldNamePrefix,
> entry.getKey());
> Object value = entry.getValue();
> if (value == null) {
> newRecord.put(fieldName(fieldNamePrefix, entry.getKey()),
> null);
> return;
> }
> ...
> {code}
> should be
> {code}
> for (Map.Entry<String, Object> entry : originalRecord.entrySet()) {
> final String fieldName = fieldName(fieldNamePrefix,
> entry.getKey());
> Object value = entry.getValue();
> if (value == null) {
> newRecord.put(fieldName(fieldNamePrefix, entry.getKey()),
> null);
> continue;
> }
> {code}
> I have attached a patch containing the fix for this issue.
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