java.lang.AbstractMethodError: io.openmessaging.connector.api.component.connector.Connector.start

2022-07-12 10:58:49 ERROR qtp1680503330-21 - Exception occurred while servicing http-request
java.lang.AbstractMethodError: io.openmessaging.connector.api.component.connector.Connector.start(Lio/openmessaging/KeyValue;)V
at org.apache.rocketmq.connect.runtime.service.memory.MemoryConfigManagementServiceImpl.putConnectorConfig(MemoryConfigManagementServiceImpl.java:160)
at org.apache.rocketmq.connect.runtime.rest.RestHandler.handleCreateConnector(RestHandler.java:145)
at io.javalin.security.SecurityUtil.noopAccessManager(SecurityUtil.kt:22)
at io.javalin.Javalin.lambda$addHandler$0(Javalin.java:606)
at io.javalin.core.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:46)
at io.javalin.core.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:17)
at io.javalin.core.JavalinServlet$service$1.invoke(JavalinServlet.kt:143)
at io.javalin.core.JavalinServlet$service$2.invoke(JavalinServlet.kt:41)
at io.javalin.core.JavalinServlet.service(JavalinServlet.kt:107)
at io.javalin.core.util.JettyServerUtil$initialize$httpHandler$1.doHandle(JettyServerUtil.kt:72)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1668)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)
at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:174)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
at org.eclipse.jetty.server.Server.handle(Server.java:502)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:132)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
at java.lang.Thread.run(Thread.java:748)

Start by examining MemoryConfigManagementServiceImpl.putConnectorConfig at line 160 and RestHandler.handleCreateConnector at line 145, then compare the Connector.start(KeyValue) API involved in the stack trace. Reproduce connector creation through the REST handler and verify that it no longer raises AbstractMethodError.

Written by the indexing model from the issue text.