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https://issues.apache.org/jira/browse/FLINK-10358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16620832#comment-16620832
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ASF GitHub Bot commented on FLINK-10358:
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yxu-valleytider commented on issue #6708: [FLINK-10358][Kinesis-connector] fix
NPE in case millisBehindLatest is null
URL: https://github.com/apache/flink/pull/6708#issuecomment-422874733
@mxm We do plan to contribute the efforts of consuming from dynamodb
streams (Flink-4582) back to upstream flink. This patch is needed for our
internal testing. And we strive to keep upstream flink and our internal fork as
consistent as possible.
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> Flink kinesis connector could throw NPE during getRecords() call
> -----------------------------------------------------------------
>
> Key: FLINK-10358
> URL: https://issues.apache.org/jira/browse/FLINK-10358
> Project: Flink
> Issue Type: Bug
> Components: Kinesis Connector
> Reporter: Ying Xu
> Assignee: Ying Xu
> Priority: Major
> Labels: pull-request-available
>
> When extending the flink kinesis connector to consume from a dynamodb stream,
> it was found NPE could be thrown at
> [here|https://github.com/apache/flink/blob/e3c98f05d3544d0165c2d97d2d00fcd295cef8c8/flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/internals/ShardConsumer.java#L376]
> .
> This is because the [getRecords
> API|https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_streams_GetRecords.html]
> in dynamodb streams does not return the millisBehindLatest field and has it
> set to null. Null check is probably needed here.
> See FLINK-4582 for the context of building dynamodb streams connector on top
> of the Kinesis connector.
>
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