Test build #22964 has finished for PR 3122 at commit dce0f5a.

• This patch fails to build.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • public final class JavaGradientBoostedTrees
  • case class Params(
  • public final class LimitedInputStream extends FilterInputStream
  • public class ShuffleSecretManager implements SecretKeyHolder
  • public class YarnShuffleService extends AuxiliaryService
  • public class HadoopConfigProvider extends ConfigProvider
  • case class AllocatedBlocks(streamIdToAllocatedBlocks: Map[Int, Seq[ReceivedBlockInfo]])
  • class ReceiverTracker(ssc: StreamingContext, skipReceiverLaunch: Boolean = false) extends Logging

Test build #22967 has finished for PR 3122 at commit c7f3a56.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

This looks good, but could also explain what necessitates this change? Did you observe some error? If nothing else, just putting the error you observed in the JIRA would help somebody else find this patch if they run into the error as well.

Actually I don't hit any issues caused by not setting connection timeout but the host trying to connect to a host wait for establishing forever when server side is hang.
In fact, org.apache.spark.util.Utils#doFetchFile, URLConnection is set timeout.

Ok this makes sense. I'm merging in master & branch-1.2.

Thanks a lot!