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Posted to user@flink.apache.org by Jayant Ameta <wi...@gmail.com> on 2018/11/28 07:09:50 UTC

Flink operator UUID and serialVersionUID

Hi all, I've a few questions regarding serial version:

1. The production ready checklist mentions using uuids
<https://ci.apache.org/projects/flink/flink-docs-release-1.6/ops/production_ready.html#set-uuids-for-operators>
for
operators. How is it different from setting a serialVersionUID on an
operator?

2. Which operators need to have a serialVersionUID present (or implement
Serializable interface)?

3. If I have a MapState<String, MyObject>, does MyObject need to have a
serialVersionUID and does it need to implement Serializable interface?

Thanks,
Jayant