Liu Jian created SPARK-32355:
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Summary: 使用Structured Streaming窗口统计不能实现topN
Key: SPARK-32355
URL: https://issues.apache.org/jira/browse/SPARK-32355
Project: Spark
Issue Type: IT Help
Components: Java API
Affects Versions: 2.4.0
Reporter: Liu Jian
{quote}
{code:java}
//代码占位符
Dataset<Row> result = ds.groupBy(functions.window(ds.col("_c1"), "1 minutes",
"1 minutes"), ds.col("_c0")).agg(functions.first("_c2"),
functions.last("_c2")).sort("_c1");{code}
例如：_c1是数据时间，窗口统计之后还想根据时间排序，并取出第一条和最后一条，却实现不了! 感觉spark的Structured
Streaming实现不了。请问这个需求怎么 实现呢？
{quote}
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