wangsan created SPARK-22503:
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Summary: Using current processing time to generate windows in
streaming processing
Key: SPARK-22503
URL: https://issues.apache.org/jira/browse/SPARK-22503
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 2.3.0
Reporter: wangsan
There are cases we want to use processing time to generate windows in stream
processing, but `current_timestamp()` are not allowed in `window()` function
now.
When using `current_timestamp` in `window` function, the exception tells
"nondeterministic expressions are only allowed in Project, Filter, Aggregate or
Window".
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