Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/7057#discussion_r33641591
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveDataFrameWindowSuite.scala
---
@@ -189,7 +189,7 @@ class HiveDataFrameWindowSuite extends QueryTest {
df.select(
$"key",
last("value").over(
- Window.partitionBy($"value").orderBy($"key").rangeBetween(1,
Long.MaxValue))
+ Window.partitionBy($"value").orderBy($"key").rangeBetween(-1, 0))
--- End diff --
Yes, it was wrong. The default behavior when Hive parses the this partial
frame definition '..RANGE 1 preceding...' is to expand this into '..RANGE
BETWEEN 1 PRECEDING AND CURRENT ROW...', and not into '..RANGE BETWEEN 1
FOLLOWING AND UNBOUNDED PRECEDING...'. So the test was wrong.
But this still strikes me as odd, how did this pass previous tests? Did the
default behavior change?
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