[KAFKA-9883] Connect request to restart task can result in IllegalArgumentError: "uriTemplate" parameter is null

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.6.0, 2.4.2, 2.5.1
• Component/s: connect
• Assignee: Randall Hauch
• Reporter: Randall Hauch
• Created: 16/Apr/20 23:03
• Updated: 23/Apr/20 22:47
• Resolved: 23/Apr/20 22:47

Description

When attempting to restart a connector, the following is logged by Connect:

 

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)

Resubmitting the restart REST request will usually resolve the problem.

 

Issue Links

• links to: GitHub Pull Request #8536