Dear Flink developers,
Having difficulty of getting a Flink job started.
The job's uberjar/fat jar is around 400MB, and I need to kick 800+
containers.
The default HDFS replication is 3.
*The Yarn queue is empty, and 800 containers are allocated
almost immediately by Yarn RM.*
It takes very long time until all 800 nodes (node managers) will download
Uberjar from HDFS to local machines.
*Q1:*
a) Do all those 800 nodes download of batch of 3 at a time ? ( batch
size = HDFS replication size)
b) Or Do Flink TM's can replicate from each other ? or already started
TM's replicate to yet-started nodes?
Most probably answer is (a), but want to confirm.
*Q2:*
What is the recommended way of handling 400MB+ Uberjar with 800+
containers ?
Any specific params to tune?
Thanks.
Because downloading the UberJar takes really long time, after around 15
minutes since the job kicked, facing this exception:
org.apache.hadoop.yarn.exceptions.YarnException: Unauthorized request
to start container.
This token is expired. current time is 1567116179193 found 1567116001610
Note: System times on machines may be out of sync. Check system time
and time zones.
at sun.reflect.GeneratedConstructorAccessor35.newInstance(Unknown
Source)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
org.apache.hadoop.yarn.api.records.impl.pb.SerializedExceptionPBImpl.instantiateException(SerializedExceptionPBImpl.java:168)
at
org.apache.hadoop.yarn.api.records.impl.pb.SerializedExceptionPBImpl.deSerialize(SerializedExceptionPBImpl.java:106)
at
org.apache.hadoop.yarn.client.api.impl.NMClientImpl.startContainer(NMClientImpl.java:205)
at
org.apache.flink.yarn.YarnResourceManager.lambda$onContainersAllocated$1(YarnResourceManager.java:400)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:332)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:158)
at
org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:70)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.onReceive(AkkaRpcActor.java:142)
at
org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.onReceive(FencedAkkaRpcActor.java:40)
at
akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:165)
at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
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)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
