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[SPARK-34115][CORE] Check SPARK_TESTING as lazy val to avoid slowdown #31244

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[SPARK-34115][CORE] Check SPARK_TESTING as lazy val to avoid slowdown #31244

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[SPARK-34115][CORE] Check SPARK_TESTING as lazy val to avoid slowdown…
nob13 Jan 19, 2021
eaa25f7
Update core/src/main/scala/org/apache/spark/util/Utils.scala
nob13 Jan 19, 2021
b52e427
Build fix
nob13 Jan 19, 2021
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4 changes: 3 additions & 1 deletion core/src/main/scala/org/apache/spark/util/Utils.scala
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Expand Up @@ -1939,7 +1939,9 @@ private[spark] object Utils extends Logging {
* Indicates whether Spark is currently running unit tests.
*/
def isTesting: Boolean = {
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sys.env.contains("SPARK_TESTING") || sys.props.contains(IS_TESTING.key)
// Scala's `sys.env` creates a ton of garbage by constructing Scala immutable maps, so
// we directly use the Java APIs instead.
System.getenv("SPARK_TESTING") != null || System.getProperty(IS_TESTING.key) != null
}

/**
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