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https://issues.apache.org/jira/browse/FLINK-10474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16647955#comment-16647955
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ASF GitHub Bot commented on FLINK-10474:
----------------------------------------
fhueske commented on a change in pull request #6792: [FLINK-10474][table] Don't
translate IN/NOT_IN to JOIN with VALUES
URL: https://github.com/apache/flink/pull/6792#discussion_r224778652
##########
File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/stream/table/CalcITCase.scala
##########
@@ -351,4 +351,43 @@ class CalcITCase extends AbstractTestBase {
"{9=Comment#3}")
assertEquals(expected.sorted, StreamITCase.testResults.sorted)
}
+
+ @Test
+ def testIn(): Unit = {
+ val env = StreamExecutionEnvironment.getExecutionEnvironment
+ val tEnv = TableEnvironment.getTableEnvironment(env)
+ StreamITCase.testResults = mutable.MutableList()
+ val ds = StreamTestData.get3TupleDataStream(env).toTable(tEnv)
+ .as('a, 'b, 'c)
+ .where("b = 1 || b = 3 || b = 4 || b = 5 || b = 6")
+
+
+ val results = ds.toAppendStream[Row]
+ results.addSink(new StreamITCase.StringSink[Row])
+ env.execute()
+
+ val expected = mutable.MutableList(
+ "1,1,Hi", "4,3,Hello world, how are you?", "5,3,I am fine.", "6,3,Luke
Skywalker",
+ "7,4,Comment#1", "8,4,Comment#2", "9,4,Comment#3", "10,4,Comment#4",
"11,5,Comment#5",
+ "12,5,Comment#6", "13,5,Comment#7", "14,5,Comment#8", "15,5,Comment#9",
"16,6,Comment#10",
+ "17,6,Comment#11", "18,6,Comment#12", "19,6,Comment#13",
"20,6,Comment#14", "21,6,Comment#15")
+ assertEquals(expected.sorted, StreamITCase.testResults.sorted)
+ }
+
+ @Test
+ def testNotIn(): Unit = {
Review comment:
Merge with existing
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> Don't translate IN with Literals to JOIN with VALUES for streaming queries
> --------------------------------------------------------------------------
>
> Key: FLINK-10474
> URL: https://issues.apache.org/jira/browse/FLINK-10474
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.6.1, 1.7.0
> Reporter: Fabian Hueske
> Assignee: Hequn Cheng
> Priority: Major
> Labels: pull-request-available
>
> IN predicates with literals are translated to JOIN with VALUES if the number
> of elements in the IN clause exceeds a certain threshold. This should not be
> done, because a streaming join is very heavy and materializes both inputs
> (which is fine for the VALUES) input but not for the other.
> There are two ways to solve this:
> # don't translate IN to a JOIN at all
> # translate it to a JOIN but have a special join strategy if one input is
> bound and final (non-updating)
> Option 1. should be easy to do, option 2. requires much more effort.
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