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https://issues.apache.org/jira/browse/FLINK-20580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17247991#comment-17247991
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Till Rohrmann commented on FLINK-20580:
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The problematic code locations are {{BlobWriter}} and
{{SerializedValueSerializer}}.
> Missing null value handling for SerializedValue's getByteArray()
> -----------------------------------------------------------------
>
> Key: FLINK-20580
> URL: https://issues.apache.org/jira/browse/FLINK-20580
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System
> Affects Versions: 1.13.0
> Reporter: Matthias
> Priority: Minor
> Labels: starter
>
> {{SerializedValue}} allows to wrap {{null}} values. Because of this,
> {{SerializedValue.getByteArray()}} might return {{null}} which is not
> properly handled in different locations.
> We should add null handling in these cases and add tests for these cases.
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