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From "Robert Metzger (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-1952) Cannot run ConnectedComponents example: Could not allocate a slot on instance
Date Tue, 28 Apr 2015 10:35:06 GMT
Robert Metzger created FLINK-1952:
-------------------------------------

             Summary: 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


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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