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https://issues.apache.org/jira/browse/KAFKA-13139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17388332#comment-17388332
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Kalpesh Patel commented on KAFKA-13139:
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Thanks a lot [~rhauch] and [~kkonstantine] for taking care of the fix and
unblocking the release.
> Empty response after requesting to restart a connector without the tasks
> results in NPE
> ---------------------------------------------------------------------------------------
>
> Key: KAFKA-13139
> URL: https://issues.apache.org/jira/browse/KAFKA-13139
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 3.0.0
> Reporter: Konstantine Karantasis
> Assignee: Konstantine Karantasis
> Priority: Blocker
> Fix For: 3.0.0
>
>
> After https://issues.apache.org/jira/browse/KAFKA-4793 a response to restart
> only the connector (without any tasks) returns OK with an empty body.
> As system test runs revealed, this causes an NPE in
> [https://github.com/apache/kafka/blob/trunk/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/rest/RestClient.java#L135]
> We should return 204 (NO_CONTENT) instead.
> This is a regression from previous behavior, therefore the ticket is marked
> as a blocker candidate for 3.0
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