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https://issues.apache.org/jira/browse/FLINK-6966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16058694#comment-16058694
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Jark Wu commented on FLINK-6966:
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The key problem is how to generate a deterministic UID for the same query. We
can learn from {{StreamGraphHasherV1#generateDeterministicHash}} which
generates the default UID for operators. What should we take into account to
generate the UID? The aggs, the window types?
> Add maxParallelism and UIDs to all operators generated by the Table API / SQL
> -----------------------------------------------------------------------------
>
> Key: FLINK-6966
> URL: https://issues.apache.org/jira/browse/FLINK-6966
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: Fabian Hueske
> Assignee: sunjincheng
>
> At the moment, the Table API does not assign UIDs and the max parallelism to
> operators (except for operators with parallelism 1).
> We should do that to avoid problems when rescaling or restarting jobs from
> savepoints.
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