Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/169#discussion_r40484512
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/limit/TestLimitWithExchanges.java
---
@@ -26,4 +30,34 @@
public void testLimitWithExchanges() throws Exception{
testPhysicalFromFile("limit/limit_exchanges.json");
}
+
+ @Test
+ public void testPushLimitPastUnionExchange() throws Exception {
--- End diff --
I added more unit tests with data validation. The data validation is only
to verify row count, but not the record. That's because depending on which scan
minor fragment first send the data, the final result could be changing.
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