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[SPARK-23523][SQL][BACKPORT-2.3] Fix the incorrect result caused by t… #13
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…he rule OptimizeMetadataOnlyQuery This PR is to backport #20684 and #20693 to Spark 2.3 branch --- ## What changes were proposed in this pull request? ```Scala val tablePath = new File(s"${path.getCanonicalPath}/cOl3=c/cOl1=a/cOl5=e") Seq(("a", "b", "c", "d", "e")).toDF("cOl1", "cOl2", "cOl3", "cOl4", "cOl5") .write.json(tablePath.getCanonicalPath) val df = spark.read.json(path.getCanonicalPath).select("CoL1", "CoL5", "CoL3").distinct() df.show() ``` It generates a wrong result. ``` [c,e,a] ``` We have a bug in the rule `OptimizeMetadataOnlyQuery `. We should respect the attribute order in the original leaf node. This PR is to fix it. ## How was this patch tested? Added a test case Author: Xingbo Jiang <[email protected]> Author: gatorsmile <[email protected]> Closes #20763 from gatorsmile/backport23523.
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…he rule OptimizeMetadataOnlyQuery
This PR is to backport apache#20684 and apache#20693 to Spark 2.3 branch
What changes were proposed in this pull request?
It generates a wrong result.
We have a bug in the rule
OptimizeMetadataOnlyQuery. We should respect the attribute order in the original leaf node. This PR is to fix it.How was this patch tested?
Added a test case
Author: Xingbo Jiang [email protected]
Author: gatorsmile [email protected]
Closes apache#20763 from gatorsmile/backport23523.
What changes were proposed in this pull request?
(Please fill in changes proposed in this fix)
How was this patch tested?
(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
Please review http://spark.apache.org/contributing.html before opening a pull request.