[ 
https://issues.apache.org/jira/browse/SPARK-28202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Saisai Shao resolved SPARK-28202.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0

Issue resolved by pull request 24998
[https://github.com/apache/spark/pull/24998]

> [Core] [Test] Avoid noises of system props in SparkConfSuite
> ------------------------------------------------------------
>
>                 Key: SPARK-28202
>                 URL: https://issues.apache.org/jira/browse/SPARK-28202
>             Project: Spark
>          Issue Type: Test
>          Components: Spark Core
>    Affects Versions: 3.0.0
>            Reporter: ShuMing Li
>            Priority: Trivial
>             Fix For: 3.0.0
>
>
> When SPARK_HOME of env is set and contains a specific `spark-defaults,conf`, 
> `org.apache.spark.util.loadDefaultSparkProperties` method may noise `system 
> props`. So when runs `core/test` module, it is possible to fail to run 
> `SparkConfSuite` .
>  
> It's easy to repair by setting `loadDefaults` in `SparkConf` to be false.
> ```
> [info] - accumulators (5 seconds, 565 milliseconds)
> [info] - deprecated configs *** FAILED *** (79 milliseconds)
> [info] 7 did not equal 4 (SparkConfSuite.scala:266)
> [info] org.scalatest.exceptions.TestFailedException:
> [info] at 
> org.scalatest.Assertions.newAssertionFailedException(Assertions.scala:528)
> [info] at 
> org.scalatest.Assertions.newAssertionFailedException$(Assertions.scala:527)
> [info] at 
> org.scalatest.FunSuite.newAssertionFailedException(FunSuite.scala:1560)
> [info] at 
> org.scalatest.Assertions$AssertionsHelper.macroAssert(Assertions.scala:501)
> [info] at 
> org.apache.spark.SparkConfSuite.$anonfun$new$26(SparkConfSuite.scala:266)
> [info] at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
> [info] at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:83)
> [info] at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
> [info] at org.scalatest.Transformer.apply(Transformer.scala:22)
> [info] at org.scalatest.Transformer.apply(Transformer.scala:20)
> [info] at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:186)
> [info] at org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:149)
> [info] at 
> org.scalatest.FunSuiteLike.invokeWithFixture$1(FunSuiteLike.scala:184)
> [info] at 
> org.scalatest.FunSuiteLike.$anonfun$runTest$1(FunSuiteLike.scala:196)
> [info] at org.scalatest.SuperEngine.runTestImpl(Engine.scala:289)
> ```



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