Tathagata Das created SPARK-19314:
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Summary: Do not allow sort before aggregation in Structured
Streaming plan
Key: SPARK-19314
URL: https://issues.apache.org/jira/browse/SPARK-19314
Project: Spark
Issue Type: Bug
Components: Structured Streaming
Affects Versions: 2.1.0, 2.0.2
Reporter: Tathagata Das
Assignee: Tathagata Das
Priority: Blocker
Sort in a streaming plan should be allowed only after a aggregation in complete
mode. Currently it is incorrectly allowed when present anywhere in the plan. It
gives unpredictable potentially incorrect results.
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