ppalaga commented on a change in pull request #2052:
URL: https://github.com/apache/camel-quarkus/pull/2052#discussion_r534824841
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File path: docs/modules/ROOT/pages/reference/extensions/google-pubsub.adoc
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@@ -32,3 +32,12 @@ Please refer to the above link for usage and configuration
details.
----
Check the xref:user-guide/index.adoc[User guide] for more information about
writing Camel Quarkus applications.
+
+== Camel Quarkus limitations
+
+By default, the Camel PubSub component uses JDK object serialization via
`ObjectOutputStream` whenever the message body is anything other than `String`
or `byte[]`.
+
+Since such serialization is not yet supported by GraalVM, this extension
provides a custom Jackson based serializer to serialize complex message
payloads as JSON.
Review comment:
The custom Jackson based serializer is used in both JVM and native modes
(the text seems to suggest that).
BTW, we'll see by tomorrow, whether serialization will be supported in
GraalVM 21 https://github.com/oracle/graal/pull/2730#issuecomment-737135245
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