reswqa commented on code in PR #25729:
URL: https://github.com/apache/flink/pull/25729#discussion_r1871199902
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flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/config/LookupJoinHintOptions.java:
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@@ -100,6 +100,12 @@ public class LookupJoinHintOptions {
.noDefaultValue()
.withDescription("Max attempt number of the 'fixed-delay'
retry strategy.");
+ public static final ConfigOption<Boolean> SHUFFLE =
+ key("shuffle")
Review Comment:
This pr not only introduced custom shuffle, but also support hash shuffle
for lookup join input stream. Without this shuffle hint, input stream is not
distributed by join key.
if lookup source doesn't impl `SupportsLookupCustomShuffle`, plan also try
to apply a hash distribution.
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