Github user sunjincheng121 commented on a diff in the pull request:
https://github.com/apache/flink/pull/3150#discussion_r96635999
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/dataset/DataSetWindowAggregateITCase.scala
---
@@ -119,4 +119,35 @@ class DataSetWindowAggregateITCase(
val results = windowedTable.toDataSet[Row].collect()
TestBaseUtils.compareResultAsText(results.asJava, expected)
}
+
+ @Test
+ def testEventTimeSessionGroupWindow(): Unit = {
+ val env = ExecutionEnvironment.getExecutionEnvironment
+ val tEnv = TableEnvironment.getTableEnvironment(env, config)
+
+ val table = env.fromCollection(data).toTable(tEnv, 'long, 'int,
'string)
+ val windowedTable = table
+ .groupBy('string)
+ .window(Session withGap 7.milli on 'long as 'w)
+ .select('string, 'string.count, 'w.start, 'w.end)
+
+ val results = windowedTable.toDataSet[Row].collect()
+
+ val expected = "Hallo,1,1970-01-01 00:00:00.002,1970-01-01
00:00:00.009\nHello world,1," +
+ "1970-01-01 00:00:00.008,1970-01-01 00:00:00.015\nHello world,1," +
+ "1970-01-01 00:00:00.016,1970-01-01 00:00:00.023\nHello,3,1970-01-01
00:00:00.003," +
+ "1970-01-01 00:00:00.013\nHi,1,1970-01-01 00:00:00.001,1970-01-01
00:00:00.008"
+ TestBaseUtils.compareResultAsText(results.asJava, expected)
+ }
+
+ @Test(expected = classOf[UnsupportedOperationException])
+ def testAlldEventTimeSessionGroupWindow(): Unit = {
--- End diff --
Yes, I have discussed this with fabian, and we will add non-grouped session
windows for batch tables in
[FLINK-5219](https://issues.apache.org/jira/browse/FLINK-5219).
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