Perhaps related to this, one of my Tasks does not seem to be restoring correctly / check pointing. It hangs during the checkpoint process and then causes a timeout and then says "Checkpoint Coordinator is suspended." I have increased the "slot.idel.timeout" as was recommended here <https://mail-archives.apache.org/mod_mbox/flink-user/201811.mbox/%3cc7e61cb0-8799-403a-861b-88d2f3eb2...@bytedance.com%3E>, and though it lasted longer, the checkpoint still failed.
Thanks, Austin On Tue, Dec 4, 2018 at 12:24 PM Austin Cawley-Edwards < austin.caw...@gmail.com> wrote: > We are seeing this OutOfMemoryError in the container logs. How can we > increase the memory to take full advantage of the cluster? Or do we just > have to more aggressively scale? > > Best, > Austin > > java.lang.OutOfMemoryError: GC overhead limit exceeded > at java.util.Arrays.copyOfRange(Arrays.java:3664) > at java.lang.String.<init>(String.java:207) > at java.lang.String.substring(String.java:1969) > at > sun.reflect.misc.ReflectUtil.isNonPublicProxyClass(ReflectUtil.java:288) > at sun.reflect.misc.ReflectUtil.checkPackageAccess(ReflectUtil.java:165) > at > java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1870) > at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1750) > at > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2041) > at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1572) > at java.io.ObjectInputStream.readObject(ObjectInputStream.java:430) > at > akka.serialization.JavaSerializer$$anonfun$1.apply(Serializer.scala:328) > at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58) > at akka.serialization.JavaSerializer.fromBinary(Serializer.scala:328) > at > akka.serialization.Serialization.akka$serialization$Serialization$$deserializeByteArray(Serialization.scala:156) > at > akka.serialization.Serialization$$anonfun$deserialize$2.apply(Serialization.scala:142) > at scala.util.Try$.apply(Try.scala:192) > at akka.serialization.Serialization.deserialize(Serialization.scala:136) > at > akka.remote.MessageSerializer$.deserialize(MessageSerializer.scala:30) > at > akka.remote.DefaultMessageDispatcher.payload$lzycompute$1(Endpoint.scala:64) > at akka.remote.DefaultMessageDispatcher.payload$1(Endpoint.scala:64) > at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:82) > at > akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:982) > at akka.actor.Actor$class.aroundReceive(Actor.scala:502) > at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:446) > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526) > at akka.actor.ActorCell.invoke(ActorCell.scala:495) > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257) > at akka.dispatch.Mailbox.run(Mailbox.scala:224) > at akka.dispatch.Mailbox.exec(Mailbox.scala:234) > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > > > On Tue, Dec 4, 2018 at 11:24 AM Austin Cawley-Edwards < > austin.caw...@gmail.com> wrote: > >> Hi all, >> >> We have a Flink 1.6 streaming application running on Amazon EMR, with a >> YARN session configured with 20GB for the Task Manager, 2GB for the Job >> Manager, and 4 slots (number of vCPUs), in detached mode. Each Core Node >> has 4 vCores, 32 GB mem, 32 GB disc, and each Task Node has 4 vCores, 8 GB >> mem, 32 GB disc. We have auto-scaling for Core Nodes based on the HDFS >> Utilization and Capacity Remaining GB, as well as auto-scaling for the Task >> Nodes based on YARN Available Memory and the number of Pending Containers. >> We've got Log Aggregation turned on as well. This runs well under normal >> pressure for about a week, where upon YARN can no longer allocate the >> resource requests from Flink, causing container requests to build up. Even >> when scaled up, the container requests don't seem to be fulfilled. I've >> seen that it seems to start. Does anyone have a good guide to setting up a >> streaming application on EMR with YARN? >> >> Thank you, >> Austin Cawley-Edwards >> >
