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Bug
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Resolution: Done
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Major
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0.10.0.Beta3
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None
The version 0.10.0.Beta3 introduced the heartbeat functionality to the MongoDB Connector, via DBZ-1198
The SMT for extracting the new document doesn't support the messages which might be routed from the heartbeat, thus breaking it:
kafka-connect_1 | 2019-08-14 12:50:42,083 ERROR || WorkerSourceTask{id=usabilla-cdc-accounts-0} Task threw an uncaught and unrecoverable exception [org.apache.kafka.connect.runtime.WorkerTask]
kafka-connect_1 | org.apache.kafka.connect.errors.ConnectException: Tolerance exceeded in error handler
kafka-connect_1 | at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:178)
kafka-connect_1 | at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execute(RetryWithToleranceOperator.java:104)
kafka-connect_1 | at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:50)
kafka-connect_1 | at org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:293)
kafka-connect_1 | at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:229)
kafka-connect_1 | at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:175)
kafka-connect_1 | at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:219)
kafka-connect_1 | at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
kafka-connect_1 | at java.util.concurrent.FutureTask.run(FutureTask.java:266)
kafka-connect_1 | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
kafka-connect_1 | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
kafka-connect_1 | at java.lang.Thread.run(Thread.java:748)
kafka-connect_1 | Caused by: java.lang.NullPointerException
kafka-connect_1 | at org.apache.kafka.connect.transforms.ExtractField.apply(ExtractField.java:61)
kafka-connect_1 | at io.debezium.connector.mongodb.transforms.ExtractNewDocumentState.apply(ExtractNewDocumentState.java:142)
kafka-connect_1 | at org.apache.kafka.connect.runtime.TransformationChain.lambda$apply$0(TransformationChain.java:50)
kafka-connect_1 | at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndRetry(RetryWithToleranceOperator.java:128)
kafka-connect_1 | at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:162)
kafka-connect_1 | ... 11 more
kafka-connect_1 | 2019-08-14 12:50:42,091 ERROR || WorkerSourceTask{id=usabilla-cdc-accounts-0} Task is being killed and will not recover until manually restarted [org.apache.kafka.connect.runtime.WorkerTask]
I propose to use a similar approach to the other SMTs, like DBZ-1388
