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ASF GitHub Bot commented on FLINK-3134: --------------------------------------- Github user rmetzger commented on a diff in the pull request: https://github.com/apache/flink/pull/1450#discussion_r47611847 --- Diff: flink-yarn/src/main/scala/org/apache/flink/yarn/ApplicationClient.scala --- @@ -29,6 +31,7 @@ import org.apache.flink.runtime.akka.AkkaUtils import org.apache.flink.runtime.yarn.FlinkYarnClusterStatus import org.apache.flink.yarn.YarnMessages._ import scala.collection.mutable +import scala.concurrent.Await --- End diff -- These imports are probably unused > Make YarnJobManager's allocate call asynchronous > ------------------------------------------------ > > Key: FLINK-3134 > URL: https://issues.apache.org/jira/browse/FLINK-3134 > Project: Flink > Issue Type: Bug > Components: YARN Client > Affects Versions: 0.10.0, 1.0.0, 0.10.1 > Reporter: Maximilian Michels > Assignee: Maximilian Michels > Fix For: 1.0.0 > > > The {{allocate()}} call is used in the {{YarnJobManager}} to send a heartbeat > to the YARN resource manager. This call may block the JobManager actor system > for arbitrary time, e.g. if retry handlers are set up within the call to > allocate. > I propose to use the {{AMRMClientAsync}}'s callback methods to send > heartbeats and update the container information. The API is available for our > supported Hadoop versions (2.3.0 and above). > https://hadoop.apache.org/docs/stable/api/org/apache/hadoop/yarn/client/api/async/AMRMClientAsync.html -- This message was sent by Atlassian JIRA (v6.3.4#6332)