[SPARK-25368][SQL] Incorrect predicate pushdown returns wrong result #22368
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Test build #95841 has finished for PR 22368 at commit
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retest this please |
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Test build #95844 has finished for PR 22368 at commit
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gatorsmile
reviewed
Sep 9, 2018
asfgit
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that referenced
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Sep 9, 2018
## What changes were proposed in this pull request?
How to reproduce:
```scala
val df1 = spark.createDataFrame(Seq(
(1, 1)
)).toDF("a", "b").withColumn("c", lit(null).cast("int"))
val df2 = df1.union(df1).withColumn("d", spark_partition_id).filter($"c".isNotNull)
df2.show
+---+---+----+---+
| a| b| c| d|
+---+---+----+---+
| 1| 1|null| 0|
| 1| 1|null| 1|
+---+---+----+---+
```
`filter($"c".isNotNull)` was transformed to `(null <=> c#10)` before #19201, but it is transformed to `(c#10 = null)` since #20155. This pr revert it to `(null <=> c#10)` to fix this issue.
## How was this patch tested?
unit tests
Closes #22368 from wangyum/SPARK-25368.
Authored-by: Yuming Wang <[email protected]>
Signed-off-by: gatorsmile <[email protected]>
(cherry picked from commit 77c9964)
Signed-off-by: gatorsmile <[email protected]>
asfgit
pushed a commit
that referenced
this pull request
Sep 9, 2018
How to reproduce:
```scala
val df1 = spark.createDataFrame(Seq(
(1, 1)
)).toDF("a", "b").withColumn("c", lit(null).cast("int"))
val df2 = df1.union(df1).withColumn("d", spark_partition_id).filter($"c".isNotNull)
df2.show
+---+---+----+---+
| a| b| c| d|
+---+---+----+---+
| 1| 1|null| 0|
| 1| 1|null| 1|
+---+---+----+---+
```
`filter($"c".isNotNull)` was transformed to `(null <=> c#10)` before #19201, but it is transformed to `(c#10 = null)` since #20155. This pr revert it to `(null <=> c#10)` to fix this issue.
unit tests
Closes #22368 from wangyum/SPARK-25368.
Authored-by: Yuming Wang <[email protected]>
Signed-off-by: gatorsmile <[email protected]>
(cherry picked from commit 77c9964)
Signed-off-by: gatorsmile <[email protected]>
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What changes were proposed in this pull request?
How to reproduce:
filter($"c".isNotNull)was transformed to(null <=> c#10)before #19201, but it is transformed to(c#10 = null)since #20155. This pr revert it to(null <=> c#10)to fix this issue.How was this patch tested?
unit tests