[SPARK-10739] [YARN] Add application attempt window for Spark on Yarn

Add application attempt window for Spark on Yarn to ignore old out of window failures, this is useful for long running applications to recover from failures.

Author: jerryshao <sshao@hortonworks.com>

Closes #8857 from jerryshao/SPARK-10739 and squashes the following commits:

36eabdc [jerryshao] change the doc
7f9b77d [jerryshao] Style change
1c9afd0 [jerryshao] Address the comments
caca695 [jerryshao] Add application attempt window for Spark on Yarn

docs/running-on-yarn.md

@@ -305,6 +305,15 @@ If you need a reference to the proper location to put log files in the YARN so t
   It should be no larger than the global number of max attempts in the YARN configuration.
   </td>
 </tr>
+<tr>
+  <td><code>spark.yarn.am.attemptFailuresValidityInterval</code></td>
+  <td>(none)</td>
+  <td>
+  Defines the validity interval for AM failure tracking.
+  If the AM has been running for at least the defined interval, the AM failure count will be reset.
+  This feature is not enabled if not configured, and only supported in Hadoop 2.6+.
+  </td>
+</tr>
 <tr>
   <td><code>spark.yarn.submit.waitAppCompletion</code></td>
   <td><code>true</code></td>

yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala

@@ -208,6 +208,20 @@ private[spark] class Client(
       case None => logDebug("spark.yarn.maxAppAttempts is not set. " +
           "Cluster's default value will be used.")
     }
+
+    if (sparkConf.contains("spark.yarn.am.attemptFailuresValidityInterval")) {
+      try {
+        val interval = sparkConf.getTimeAsMs("spark.yarn.am.attemptFailuresValidityInterval")
+        val method = appContext.getClass().getMethod(
+          "setAttemptFailuresValidityInterval", classOf[Long])
+        method.invoke(appContext, interval: java.lang.Long)
+      } catch {
+        case e: NoSuchMethodException =>
+          logWarning("Ignoring spark.yarn.am.attemptFailuresValidityInterval because the version " +
+            "of YARN does not support it")
+      }
+    }
+
     val capability = Records.newRecord(classOf[Resource])
     capability.setMemory(args.amMemory + amMemoryOverhead)
     capability.setVirtualCores(args.amCores)