Hequn Cheng created FLINK-11398:
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Summary: Add a dedicated phase to materialize time indicators for
nodes produce updates
Key: FLINK-11398
URL: https://issues.apache.org/jira/browse/FLINK-11398
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Hequn Cheng
Assignee: Hequn Cheng
As discussed
[here|https://github.com/apache/flink/pull/6787#discussion_r249056249], we need
a dedicated phase to materialize time indicators for nodes produce updates.
Details:
Currently, we materialize time indicators in `RelTimeInidicatorConverter`. We
need to introduce another materialize phase that materializes all time
attributes on nodes that produce updates. We can not do it inside
`RelTimeInidicatorConverter`, because only later, after physical optimization
phase, we know whether it is a non-window outer join which will produce updates
There are a few other things we need to consider.
- Whether we can unify the two converter phase.
- Take window with early fire into consideration(not been implemented yet). In
this case, we don't need to materialize time indicators even it produces
updates.
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