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Posted to issues@spark.apache.org by "wangsan (JIRA)" <ji...@apache.org> on 2017/11/13 06:45:01 UTC

[jira] [Created] (SPARK-22503) Using current processing time to generate windows in streaming processing

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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