[fix][io][branch-2.10] Not restart instance when kafka source poll exception. - #20816
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Motivation
When Kafka source poll message exception, it will throw it to the function framework, and not trigger the restart function instance.
#20795 uses a new method on PulsarSource #20791 to fix it on master branch. To maintain compatibility, we can't cherry-pick it to the historical version, so the class is implemented in the Kafka source connector.
Modifications
KafkaPushSourceon Kafka source connector.notifyErrorto report the exception to the io connector framework.Documentation
docdoc-requireddoc-not-neededdoc-completeMatching PR in forked repository