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https://issues.apache.org/jira/browse/SAMZA-1971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16670638#comment-16670638
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ASF GitHub Bot commented on SAMZA-1971:
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Github user asfgit closed the pull request at:
https://github.com/apache/samza/pull/786
> Fix NPE in InMemorySystemProducer when message is null
> ------------------------------------------------------
>
> Key: SAMZA-1971
> URL: https://issues.apache.org/jira/browse/SAMZA-1971
> Project: Samza
> Issue Type: Bug
> Reporter: Bharath Kumarasubramanian
> Assignee: Bharath Kumarasubramanian
> Priority: Major
> Fix For: 1.0
>
>
> For changelog topics, a delete on the record corresponds to an outgoing
> message envelope with valid key and null message. InMemorySystemProducer
> should handle it correctly as opposed to throwing NPE
> The order in which partition key is chosen is as follows
> # If the partition key exists as part of OutgoingMessageEnvelope use it to
> compute partition hash
> # If partitionKey is null, use the message key to compute partition hash
> # If both partitionKey and messageKey is absent, use message to compute the
> partition key
> We throw exception the resulting key to compute hash code is still null.
>
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