Guoqiang Li created SPARK-13371:
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Summary: Compare Option[String] and String directly
Key: SPARK-13371
URL: https://issues.apache.org/jira/browse/SPARK-13371
Project: Spark
Issue Type: Bug
Components: Scheduler
Affects Versions: 1.6.0, 1.5.2
Reporter: Guoqiang Li
{noformat}
TaskSetManager.dequeueSpeculativeTask compares Option[String] and String
directly.
{noformat}
Ths code:
https://github.com/apache/spark/blob/87abcf7df921a5937fdb2bae8bfb30bfabc4970a/core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala#L344
{code}
if (TaskLocality.isAllowed(locality, TaskLocality.RACK_LOCAL)) {
for (rack <- sched.getRackForHost(host)) {
for (index <- speculatableTasks if canRunOnHost(index)) {
val racks =
tasks(index).preferredLocations.map(_.host).map(sched.getRackForHost)
// racks: Seq[Option[String]] and rack: String
if (racks.contains(rack)) {
speculatableTasks -= index
return Some((index, TaskLocality.RACK_LOCAL))
}
}
}
}
{code}
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