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https://issues.apache.org/jira/browse/KAFKA-9883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Randall Hauch resolved KAFKA-9883.
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Resolution: Fixed
> Connect request to restart task can result in IllegalArgumentError:
> "uriTemplate" parameter is null
> ---------------------------------------------------------------------------------------------------
>
> Key: KAFKA-9883
> URL: https://issues.apache.org/jira/browse/KAFKA-9883
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 2.4.0
> Reporter: Randall Hauch
> Assignee: Randall Hauch
> Priority: Minor
> Fix For: 2.6.0, 2.4.2, 2.5.1
>
>
> When attempting to restart a connector, the following is logged by Connect:
>
> {code:java}
> ERROR Uncaught exception in REST call to
> /connectors/my-connector/tasks/0/restart
> (org.apache.kafka.connect.runtime.rest.errors.ConnectExceptionMapper)
> java.lang.IllegalArgumentException: "uriTemplate" parameter is null.
> at
> org.glassfish.jersey.uri.internal.JerseyUriBuilder.uri(JerseyUriBuilder.java:189)
> at
> org.glassfish.jersey.uri.internal.JerseyUriBuilder.uri(JerseyUriBuilder.java:72)
> at javax.ws.rs.core.UriBuilder.fromUri(UriBuilder.java:96)
> at
> org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource.completeOrForwardRequest(ConnectorsResource.java:263)
> at
> org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource.completeOrForwardRequest(ConnectorsResource.java:298)
> at
> org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource.restartTask(ConnectorsResource.java:218)
> {code}
> Resubmitting the restart REST request will usually resolve the problem.
>
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