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https://issues.apache.org/jira/browse/FLINK-29860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17628618#comment-17628618
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Yufan Sheng commented on FLINK-29860:
-------------------------------------
I think we can just remove the extra document field for {{CursorVerification}}.
> Pulsar connector bug when using Hybrid.Builder
> ----------------------------------------------
>
> Key: FLINK-29860
> URL: https://issues.apache.org/jira/browse/FLINK-29860
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Pulsar
> Affects Versions: 1.6.4
> Reporter: Noel O'Connor
> Priority: Major
>
> When using a HybridSource with a set of pulsar sources submitting a job to a
> flink cluster results in the following error
> ------------------------------------------------------------
> The program finished with the following exception:
> The implementation of the BlockElement is not serializable. The object
> probably contains or references non serializable fields.
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:164)
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:132)
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:132)
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:132)
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:132)
> org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:69)
>
> org.apache.flink.connector.base.source.hybrid.HybridSource$HybridSourceBuilder.addSource(HybridSource.java:246)
>
> org.apache.flink.connector.base.source.hybrid.HybridSource$HybridSourceBuilder.addSource(HybridSource.java:233)
>
> org.apache.flink.connector.base.source.hybrid.HybridSource.builder(HybridSource.java:104)
>
> I think this is related to https://issues.apache.org/jira/browse/FLINK-25444
> From a pulsar connector perspective it's simple fixed, just mark the "private
> final InlineElement desc" attribute in
> flink-connectors/flink-connector-pulsar/src/main/java/org/apache/flink/connector/pulsar/source/config/CursorVerification.java
> as transient to avoid the serialisation process.
>
> I've tested this and it seems to solve the issue. I can submit a PR with this
> fix.
>
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