[jira] [Commented] (FLINK-11547) JsonMappingException in DynamoDBStreamsSchema

["Devin Thomson (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-11547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17106674#comment-17106674 ] 

Devin Thomson commented on FLINK-11547:
---------------------------------------

[~jiaweiwu] I almost forgot about this ticket! Glad to see I'm not the only one with the issue. I will submit a PR by the end of Q2 (when we're more actively working on Flink in my team).

> JsonMappingException in DynamoDBStreamsSchema
> ---------------------------------------------
>
>                 Key: FLINK-11547
>                 URL: https://issues.apache.org/jira/browse/FLINK-11547
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kinesis
>    Affects Versions: 1.8.0
>            Reporter: Devin Thomson
>            Priority: Major
>         Attachments: full_flink_trace.txt
>
>
> If DynamoDBStreamsSchema is used as the deserializer for FlinkDynamoDBStreamsConsumer, an exception occurs during deserialization of a record. The stack trace is attached.
>  
> This is a blocker for using DynamoDBStreamsSchema, but can be worked around by implementing a custom deserializer. The issue appears to be due to the usage of vanilla ObjectMapper:
>  
> {code:java}
> private static final ObjectMapper MAPPER = new ObjectMapper();
> {code}
> When it should be using the appropriate mix-ins offered by the dynamodb stream adapter library:
> {code:java}
> private static final ObjectMapper MAPPER = new RecordObjectMapper();
> {code}
> This appears to resolve the issue, I tested by using my own deserializer implementation.
>  



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