liuyongvs commented on code in PR #22324:
URL: https://github.com/apache/flink/pull/22324#discussion_r1201647742
##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/config/ExecutionConfigOptions.java:
##########
@@ -435,6 +435,16 @@ public class ExecutionConfigOptions {
"Determines whether CAST will operate following
the legacy behaviour "
+ "or the new one that introduces various
fixes and improvements.");
+ @Documentation.TableOption(execMode =
Documentation.ExecMode.BATCH_STREAMING)
+ public static final ConfigOption<MapKeyDedupPolicy>
TABLE_EXEC_MAPKEY_DEDUP_POLICY =
+ key("table.exec.mapkey-dedup-policy")
Review Comment:
yeap, all kinds of map should consider this in spark
the map_constructor here @snuyanzin
https://github.com/apache/spark/blob/eeab2e701330f7bc24e9b09ce48925c2c3265aa8/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala#L184
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