[debezium] Fix JsonConverter Object NPE when program running on the c…

[minchowang]

…luster

[minchowang]

User feedback case:

• runing on the local:
  
• runing on the cluster:
  

[minchowang]

• Running test case on the cluster :
  About configuring the relevant code for JsonConverterConfig only Configure once when a container was deploy.
  

[leonardBang]

I think the root cause is JsonConverter is not serializable

[minchowang]

yes，can you have any good ways to solution this？

[leonardBang]

Sorry for the late reply, you can defined private transient JsonConverter jsonConverter; and then lazily initialize it
like

if (jsonConverter == null) {
    // initialize it
}

[minchowang]

all right

[leonardBang]

Thanks @mincwang for the contribution, LGTM, could you also check the change works in cluster?

[minchowang]

Thanks @mincwang for the contribution, LGTM, could you also check the change works in cluster?

ok, I will fix it later along with code style