[jira] [Created] (BEAM-3274) MqttIO CheckpointMark decoding randomly fails

["Jean-Baptiste Onofré (JIRA)" <ji...@apache.org>]

Jean-Baptiste Onofré created BEAM-3274:
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             Summary: MqttIO CheckpointMark decoding randomly fails
                 Key: BEAM-3274
                 URL: https://issues.apache.org/jira/browse/BEAM-3274
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-extensions
    Affects Versions: 2.2.0
            Reporter: Jean-Baptiste Onofré
            Assignee: Jean-Baptiste Onofré


Randomly, the decoding of MQTT CheckpointMark randomly fails:

{code}
Caused by: org.apache.beam.sdk.coders.CoderException: 95 unexpected extra bytes after decoding org.apache.beam.sdk.io.mqtt.MqttIO$MqttCheckpointMark@14922739
	at org.apache.beam.sdk.util.CoderUtils.decodeFromByteArray(CoderUtils.java:116)
	at org.apache.beam.sdk.util.CoderUtils.decodeFromByteArray(CoderUtils.java:107)
	at org.apache.beam.sdk.util.CoderUtils.clone(CoderUtils.java:156)
	at org.apache.beam.runners.direct.UnboundedReadEvaluatorFactory$UnboundedReadEvaluator.getReader(UnboundedReadEvaluatorFactory.java:191)
	at org.apache.beam.runners.direct.UnboundedReadEvaluatorFactory$UnboundedReadEvaluator.processElement(UnboundedReadEvaluatorFactory.java:127)
	at org.apache.beam.runners.direct.TransformExecutor.processElements(TransformExecutor.java:146)
	at org.apache.beam.runners.direct.TransformExecutor.run(TransformExecutor.java:110)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
{code}

It happens especially when the number of messages to consume from the MQTT topic is high.



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