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[SPARK-31746][YARN][TESTS] Show the actual error message in LocalityPlacementStrategySuite #28566

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[SPARK-31746][YARN][TESTS] Show the actual error message in LocalityPlacementStrategySuite #28566

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10 changes: 7 additions & 3 deletions ...ers/yarn/src/test/scala/org/apache/spark/deploy/yarn/LocalityPlacementStrategySuite.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,8 @@

package org.apache.spark.deploy.yarn

import scala.collection.JavaConverters._
import java.io.{PrintWriter, StringWriter}

import scala.collection.mutable.{HashMap, HashSet, Set}

import org.apache.hadoop.yarn.api.records._
Expand Down Expand Up @@ -46,7 +47,11 @@ class LocalityPlacementStrategySuite extends SparkFunSuite {
thread.start()
thread.join()

assert(error === null)
if (error != null) {
val errors = new StringWriter()
error.printStackTrace(new PrintWriter(errors))
fail(s"StackOverflowError should not be thrown; however, got:\n\n$errors")
}
}

private def runTest(): Unit = {
Expand All @@ -57,7 +62,6 @@ class LocalityPlacementStrategySuite extends SparkFunSuite {
// goal is to create enough requests for localized containers (so there should be many
// tasks on several hosts that have no allocated containers).

val resource = Resource.newInstance(8 * 1024, 4)
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#28566 (comment)

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ah, yeah. Seems it's used in the branch-3.0. I will fix.

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should be fixed now. thanks for pointing out quickly.

val strategy = new LocalityPreferredContainerPlacementStrategy(new SparkConf(),
yarnConf, new MockResolver())

Expand Down