Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/10108#discussion_r46503088
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -117,13 +115,9 @@ private[yarn] class YarnAllocator(
// Resource capability requested for each executors
private[yarn] val resource = Resource.newInstance(executorMemory +
memoryOverhead, executorCores)
- private val launcherPool = new ThreadPoolExecutor(
- // max pool size of Integer.MAX_VALUE is ignored because we use an
unbounded queue
- sparkConf.getInt("spark.yarn.containerLauncherMaxThreads", 25),
Integer.MAX_VALUE,
- 1, TimeUnit.MINUTES,
- new LinkedBlockingQueue[Runnable](),
- new ThreadFactoryBuilder().setNameFormat("ContainerLauncher
#%d").setDaemon(true).build())
--- End diff --
oh I see, it's a prefix that we're passing in here
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