Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/2469#discussion_r18410729
--- Diff:
yarn/stable/src/main/scala/org/apache/spark/deploy/yarn/YarnRMClientImpl.scala
---
@@ -69,7 +74,28 @@ private class YarnRMClientImpl(args:
ApplicationMasterArguments) extends YarnRMC
appAttemptId
}
- override def getProxyHostAndPort(conf: YarnConfiguration) =
WebAppUtils.getProxyHostAndPort(conf)
+ override def getAmIpFilterParams(conf: YarnConfiguration, proxyBase:
String) = {
+ // Figure out which scheme Yarn is using. Note the method seems to
have been added after 2.2,
+ // so not all stable releases have it.
+ val prefix = Try(classOf[WebAppUtils].getMethod("getHttpSchemePrefix",
classOf[Configuration])
+ .invoke(null, conf).asInstanceOf[String]).getOrElse("http://";)
+
+ // If running a new enough Yarn, use the HA-aware API for retrieving
the RM addresses.
+ try {
+ val method =
classOf[WebAppUtils].getMethod("getProxyHostsAndPortsForAmFilter",
+ classOf[Configuration])
+ val proxies = method.invoke(null, conf).asInstanceOf[JList[String]]
+ val hosts = proxies.map { proxy => proxy.split(":")(0) }
+ val uriBases = proxies.map { proxy => prefix + proxy + proxyBase }
+ Map("PROXY_HOSTS" -> hosts.mkString(","), "PROXY_URI_BASES" ->
uriBases.mkString(","))
+ } catch {
+ case e: NoSuchMethodException =>
--- End diff --
Oh never mind this is in the stable module
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