[
https://issues.apache.org/jira/browse/SPARK-44512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17746697#comment-17746697
]
Yiu-Chung Lee edited comment on SPARK-44512 at 7/25/23 5:41 AM:
----------------------------------------------------------------
After reading SPARK-41914, I found that setting
spark.sql.optimizer.plannedWrite.enabled=false (while leaving AQE enabled)
seems produces a sorted output as expected, even without the workaround.
(And I found that this option cannot be set in code directly. It must be set in
spark-submit. This config option is also undocumented.)
was (Author: JIRAUSER301473):
After reading SPARK-41914, I found that setting
spark.sql.optimizer.plannedWrite.enabled=false (while leaving AQE enabled)
seems produces a sorted output.
(And I found that this option cannot be set in code directly. It must be set in
spark-submit. This config option is also undocumented)
> dataset.sort.select.write.partitionBy does not return a sorted output
> ---------------------------------------------------------------------
>
> Key: SPARK-44512
> URL: https://issues.apache.org/jira/browse/SPARK-44512
> Project: Spark
> Issue Type: Bug
> Components: Optimizer, SQL
> Affects Versions: 3.4.1
> Reporter: Yiu-Chung Lee
> Priority: Major
> Labels: correctness
>
> (In this example the dataset is of type Tuple3, and the columns are named _1,
> _2 and _3)
>
> I found -then when AQE is enabled,- that the following code does not produce
> sorted output (.drop() also have the same problem)
> {{dataset.sort("_1")}}
> {{.select("_2", "_3")}}
> {{.write()}}
> {{.partitionBy("_2")}}
> {{.text("output");}}
>
> However, if I insert an identity mapper between select and write, the output
> would be sorted as expected.
> {{dataset = dataset.sort("_1")}}
> {{.select("_2", "_3");}}
> {{dataset.map((MapFunction<Row, Row>) row -> row, dataset.encoder())}}
> {{.write()}}
> {{{}.{}}}{{{}partitionBy("_2"){}}}
> {{.text("output")}}
> Below is the complete code that reproduces the problem.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
