HyukjinKwon commented on a change in pull request #25271:
[SPARK-28536][SQL][PYTHON][TESTS] Reduce shuffle partitions in Python UDF tests
in SQLQueryTestSuite
URL: https://github.com/apache/spark/pull/25271#discussion_r307951512
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestSuite.scala
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@@ -279,6 +279,10 @@ class SQLQueryTestSuite extends QueryTest with
SharedSQLContext {
testCase match {
case udfTestCase: UDFTest =>
+ // In Python UDF tests, the number of shuffle partitions matters
considerably in
+ // the testing time because it requires to fork and communicate
between external
+ // processes.
+ localSparkSession.conf.set(SQLConf.SHUFFLE_PARTITIONS.key, 8)
Review comment:
We could ..... I don't know lower than 8 is good enough though.. let's see
if it really decreases the time first in Jenkins .. :-)
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