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https://issues.apache.org/jira/browse/SPARK-53275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Toth reassigned SPARK-53275:
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Assignee: Bruce Robbins
> Incorrect ordering in interpreted mode when sort order includes stateful
> expressions
> ------------------------------------------------------------------------------------
>
> Key: SPARK-53275
> URL: https://issues.apache.org/jira/browse/SPARK-53275
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.5.6
> Reporter: Bruce Robbins
> Assignee: Bruce Robbins
> Priority: Major
> Labels: pull-request-available
>
> For example:
> {noformat}
> # this particular example fails with 2 executors
> bin/spark-shell --master "local[2]"
> import org.apache.spark.sql.functions.udf
> spark.udf.register("udf", (s: String) => s)
> Seq((0, "2"), (0, "1")).toDF("a", "b").createOrReplaceTempView("v1")
> // run in interpreted mode
> sql("set spark.sql.codegen.factoryMode=NO_CODEGEN")
> sql("select a, udf(b) from v1 order by a, udf(b) asc").show(false)
> // returns
> // +---+------+
> // |a |udf(b)|
> // +---+------+
> // |0 |2 |
> // |0 |1 |
> // +---+------+
> {noformat}
> Another example:
> {noformat}
> # this particular example fails with one executor
> bin/spark-shell --master "local[1]"
> import org.apache.spark.sql.functions.udf
> spark.udf.register("udf", (s: String) => s)
> Seq((676,676,"1"),
> (4056,56,"1"),
> (8788,788,"1"),
> (0,0,"1"),
> (780,780,"2"),
> (9676,676,"3"),
> (9568,568,"2")).toDF("a", "b", "c").createOrReplaceTempView("v1")
> val query = """select /*+ MERGEJOIN(t2) */ t1.b, t2.a, t1.c, t2.c
> from v1 t1
> join v1 t2 on t1.b = t2.a and udf(t1.c) = t2.c"""
> sql(query).show(false)
> // the above returns
> // +---+---+---+---+
> // |b |a |c |c |
> // +---+---+---+---+
> // |0 |0 |1 |1 |
> // |676|676|1 |1 |
> // |780|780|2 |2 |
> // +---+---+---+---+
> // switch to interpreted mode
> sql("set spark.sql.codegen.factoryMode=NO_CODEGEN")
> sql(query).show(false)
> // the above returns
> // +---+---+---+---+
> // |b |a |c |c |
> // +---+---+---+---+
> // |0 |0 |1 |1 |
> // |780|780|2 |2 |
> // +---+---+---+---+
> //
> // The row for b = 676 is missing due to incorrect sorting of the stream side.
> {noformat}
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