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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1952) Cannot run ConnectedComponents example: Could not allocate a slot on instance
Date Tue, 26 May 2015 22:03:17 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559963#comment-14559963
] 

ASF GitHub Bot commented on FLINK-1952:
---------------------------------------

Github user StephanEwen commented on the pull request:

    https://github.com/apache/flink/pull/731#issuecomment-105679990
  
    Sorry for the whitespace re-formatting. My IntelliJ settings got reverted somehow, so
it started auto-reformatting code :-/


> Cannot run ConnectedComponents example: Could not allocate a slot on instance
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-1952
>                 URL: https://issues.apache.org/jira/browse/FLINK-1952
>             Project: Flink
>          Issue Type: Bug
>          Components: Scheduler
>    Affects Versions: 0.9
>            Reporter: Robert Metzger
>            Priority: Blocker
>
> Steps to reproduce
> {code}
> ./bin/yarn-session.sh -n 350 
> {code}
> ... wait until they are connected ...
> {code}
> Number of connected TaskManagers changed to 266. Slots available: 266
> Number of connected TaskManagers changed to 323. Slots available: 323
> Number of connected TaskManagers changed to 334. Slots available: 334
> Number of connected TaskManagers changed to 343. Slots available: 343
> Number of connected TaskManagers changed to 350. Slots available: 350
> {code}
> Start CC
> {code}
> ./bin/flink run -p 350 ./examples/flink-java-examples-0.9-SNAPSHOT-ConnectedComponents.jar
> {code}
> ---> it runs
> Run KMeans, let it fail with 
> {code}
> Failed to deploy the task Map (Map at main(KMeans.java:100)) (1/350) - execution #0 to
slot SimpleSlot (2)(2)(0) - 182b7661ca9547a84591de940c47a200 - ALLOCATED/ALIVE: java.io.IOException:
Insufficient number of network buffers: required 350, but only 254 available. The total number
of network buffers is currently set to 2048. You can increase this number by setting the configuration
key 'taskmanager.network.numberOfBuffers'.
> {code}
> ... as expected.
> (I've waited for 10 minutes between the two submissions)
> Starting CC now will fail:
> {code}
> ./bin/flink run -p 350 ./examples/flink-java-examples-0.9-SNAPSHOT-ConnectedComponents.jar

> {code}
> Error message(s):
> {code}
> Caused by: java.lang.IllegalStateException: Could not schedule consumer vertex IterationHead(WorksetIteration
(Unnamed Delta Iteration)) (19/350)
> 	at org.apache.flink.runtime.executiongraph.Execution$3.call(Execution.java:479)
> 	at org.apache.flink.runtime.executiongraph.Execution$3.call(Execution.java:469)
> 	at akka.dispatch.Futures$$anonfun$future$1.apply(Future.scala:94)
> 	at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
> 	at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
> 	at scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107)
> 	... 4 more
> Caused by: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException:
Could not allocate a slot on instance 4a6d761cb084c32310ece1f849556faf @ cloud-19 - 1 slots
- URL: akka.tcp://flink@130.149.21.23:51400/user/taskmanager, as required by the co-location
constraint.
> 	at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleTask(Scheduler.java:247)
> 	at org.apache.flink.runtime.jobmanager.scheduler.Scheduler.scheduleImmediately(Scheduler.java:110)
> 	at org.apache.flink.runtime.executiongraph.Execution.scheduleForExecution(Execution.java:262)
> 	at org.apache.flink.runtime.executiongraph.ExecutionVertex.scheduleForExecution(ExecutionVertex.java:436)
> 	at org.apache.flink.runtime.executiongraph.Execution$3.call(Execution.java:475)
> 	... 9 more
> {code}



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