Shixiong Zhu created SPARK-18852:
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Summary: StreamingQuery.lastProgress should be null when
recentProgress is empty
Key: SPARK-18852
URL: https://issues.apache.org/jira/browse/SPARK-18852
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Reporter: Shixiong Zhu
Right now it throws NoSuchElementException and it's hard to be used in Python
since Python user will just see Py4jError.
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