Nico Kruber created FLINK-7523:
----------------------------------

             Summary: test instability in 
LocalStreamEnvironmentITCase#testRunIsolatedJob
                 Key: FLINK-7523
                 URL: https://issues.apache.org/jira/browse/FLINK-7523
             Project: Flink
          Issue Type: Bug
          Components: Distributed Coordination
    Affects Versions: 1.4.0
            Reporter: Nico Kruber


In a branch with unrelated changes that was created based on the current 
master, {{LocalStreamEnvironmentITCase#testRunIsolatedJob}} seems to fail 
sporadically with

{code}
Running org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase
Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.662 sec <<< 
FAILURE! - in 
org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase
testRunIsolatedJob(org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase)
  Time elapsed: 1.797 sec  <<< ERROR!
java.util.ConcurrentModificationException: null
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
        at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
        at 
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.clear(JobLeaderIdService.java:120)
        at 
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.stop(JobLeaderIdService.java:98)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRuntimeServices.shutDown(ResourceManagerRuntimeServices.java:51)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDownInternally(ResourceManagerRunner.java:107)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDown(ResourceManagerRunner.java:94)
        at 
org.apache.flink.runtime.minicluster.MiniCluster.shutdownInternally(MiniCluster.java:341)
        at 
org.apache.flink.runtime.minicluster.MiniCluster.shutdown(MiniCluster.java:309)
        at 
org.apache.flink.streaming.api.environment.Flip6LocalStreamEnvironment.execute(Flip6LocalStreamEnvironment.java:124)
        at 
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1501)
        at 
org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase.testRunIsolatedJob(LocalStreamEnvironmentITCase.java:45)
{code}

https://travis-ci.org/NicoK/flink/jobs/268340083
https://transfer.sh/10CvKr/449.1.tar.gz

relevant parts of the log:
{code}
================================================================================
Test 
testRunIsolatedJob(org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase)
 is running.
--------------------------------------------------------------------------------
12:38:58,611 INFO  
org.apache.flink.streaming.api.environment.Flip6LocalStreamEnvironment  - 
Running job on local embedded Flink mini cluster
12:38:58,614 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting Flink Mini Cluster
12:38:58,814 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting Metrics Registry
12:38:58,822 INFO  org.apache.flink.runtime.metrics.MetricRegistry              
 - No metrics reporter configured, no metrics will be exposed/reported.
12:38:58,823 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting RPC Service(s)
12:38:59,191 INFO  akka.event.slf4j.Slf4jLogger                                 
 - Slf4jLogger started
12:38:59,211 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting high-availability services
12:38:59,227 INFO  org.apache.flink.runtime.blob.BlobServer                     
 - Created BLOB server storage directory 
/tmp/blobStore-afe2e280-9b06-4f47-ad6f-a8aa60054470
12:38:59,235 INFO  org.apache.flink.runtime.blob.BlobServer                     
 - Started BLOB server at 0.0.0.0:40558 - max concurrent requests: 50 - max 
backlog: 1000
12:38:59,236 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting 1 ResourceManger(s)
12:38:59,251 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Starting RPC endpoint for 
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager at 
akka://flink/user/resourcemanager_0 .
12:38:59,266 INFO  
org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService  
- Proposing leadership to contender 
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager@32c4e8b2 @ 
akka://flink/user/resourcemanager_0
12:38:59,268 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - 
ResourceManager akka://flink/user/resourcemanager_0 was granted leadership with 
leader session ID c79740f8-fa00-4eb8-84d2-10138390ada8
12:38:59,268 INFO  
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Starting 
the SlotManager.
12:38:59,269 INFO  
org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService  
- Received confirmation of leadership for leader 
akka://flink/user/resourcemanager_0 , 
session=c79740f8-fa00-4eb8-84d2-10138390ada8
12:38:59,270 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting 1 TaskManger(s)
12:38:59,278 INFO  org.apache.flink.runtime.taskexecutor.TaskManagerServices    
 - Temporary file directory '/tmp': total 29 GB, usable 18 GB (62.07% usable)
12:38:59,407 INFO  org.apache.flink.runtime.io.network.buffer.NetworkBufferPool 
 - Allocated 196 MB for network buffer pool (number of memory segments: 6295, 
bytes per segment: 32768).
12:38:59,417 INFO  org.apache.flink.runtime.io.network.NetworkEnvironment       
 - Starting the network environment and its components.
12:38:59,419 INFO  org.apache.flink.runtime.taskexecutor.TaskManagerServices    
 - Limiting managed memory to 414 MB, memory will be allocated lazily.
12:38:59,422 INFO  org.apache.flink.runtime.io.disk.iomanager.IOManager         
 - I/O manager uses directory 
/tmp/flink-io-b4293dd8-c902-46f3-b6f8-0f9730cf84f5 for spill files.
12:38:59,480 INFO  org.apache.flink.runtime.metrics.MetricRegistry              
 - No metrics reporter configured, no metrics will be exposed/reported.
12:38:59,531 INFO  org.apache.flink.runtime.filecache.FileCache                 
 - User file cache uses directory 
/tmp/flink-dist-cache-541aefeb-81f2-4c89-9530-1d83f18f67ba
12:38:59,539 INFO  
org.apache.flink.runtime.taskexecutor.TaskManagerConfiguration  - Messages have 
a max timeout of 10000 ms
12:38:59,545 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Starting RPC endpoint for org.apache.flink.runtime.taskexecutor.TaskExecutor 
at akka://flink/user/taskmanager_0 .
12:38:59,551 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Attempting to register at ResourceManager akka://flink/user/resourcemanager_0
12:38:59,551 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Start job leader service.
12:38:59,551 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Starting job dispatcher(s) for 1 JobManger(s)
12:38:59,552 INFO  
org.apache.flink.runtime.minicluster.MiniClusterJobDispatcher  - Creating 
JobMaster services
12:38:59,556 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Flink Mini Cluster started successfully
12:38:59,574 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Resolved ResourceManager address, beginning registration
12:38:59,575 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Registration at ResourceManager attempt 1 (timeout=100ms)
12:38:59,591 INFO  
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Register 
TaskManager 839f9983d3f82bee54580acea5a5d9dc at the SlotManager.
12:38:59,593 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Successful registration at resource manager 
akka://flink/user/resourcemanager_0 under registration id 
839f9983d3f82bee54580acea5a5d9dc.
12:38:59,594 INFO  
org.apache.flink.runtime.minicluster.MiniClusterJobDispatcher  - Received job 
for blocking execution: Flink Streaming Job (4edcbd9b42d9cca157794e9e2cdc29d3)
12:38:59,594 INFO  
org.apache.flink.runtime.minicluster.MiniClusterJobDispatcher  - Starting 1 
JobMaster(s) for job Flink Streaming Job (4edcbd9b42d9cca157794e9e2cdc29d3)
12:38:59,603 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Starting RPC endpoint for org.apache.flink.runtime.jobmaster.JobMaster at 
akka://flink/user/jobmanager_1 .
12:38:59,616 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Initializing job Flink Streaming Job (4edcbd9b42d9cca157794e9e2cdc29d3).
12:38:59,625 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Using restart strategy 
FixedDelayRestartStrategy(maxNumberRestartAttempts=2147483647, 
delayBetweenRestartAttempts=5) for Flink Streaming Job 
(4edcbd9b42d9cca157794e9e2cdc29d3).
12:38:59,629 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Starting RPC endpoint for org.apache.flink.runtime.instance.SlotPool at 
akka://flink/user/11533ce9-593d-4fd9-ac88-6999a1490795 .
12:38:59,659 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Job recovers via failover strategy: full graph restart
12:38:59,704 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Running initialization on master for job Flink Streaming Job 
(4edcbd9b42d9cca157794e9e2cdc29d3).
12:38:59,704 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Successfully ran initialization on master in 0 ms.
12:38:59,722 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,730 INFO  
org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService  
- Proposing leadership to contender 
org.apache.flink.runtime.jobmaster.JobManagerRunner@4bc28c33 @ 
akka://flink/user/jobmanager_1
12:38:59,730 INFO  org.apache.flink.runtime.jobmaster.JobManagerRunner          
 - JobManager runner for job Flink Streaming Job 
(4edcbd9b42d9cca157794e9e2cdc29d3) was granted leadership with session id 
1c41035e-ef27-436e-bd0a-434042290346 at akka://flink/user/jobmanager_1.
12:38:59,730 INFO  
org.apache.flink.runtime.highavailability.nonha.embedded.EmbeddedLeaderService  
- Received confirmation of leadership for leader akka://flink/user/jobmanager_1 
, session=1c41035e-ef27-436e-bd0a-434042290346
12:38:59,731 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - JobManager started as leader 1c41035e-ef27-436e-bd0a-434042290346 for job 
4edcbd9b42d9cca157794e9e2cdc29d3
12:38:59,731 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Starting execution of job Flink Streaming Job 
(4edcbd9b42d9cca157794e9e2cdc29d3)
12:38:59,733 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Attempting to register at ResourceManager akka://flink/user/resourcemanager_0
12:38:59,734 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Resolved ResourceManager address, beginning registration
12:38:59,734 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Registration at ResourceManager attempt 1 (timeout=100ms)
12:38:59,736 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - 
Registering job manager 
1c41035e-ef27-436e-bd0a-434042290346@akka://flink/user/jobmanager_1 for job 
4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,739 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Job Flink Streaming Job (4edcbd9b42d9cca157794e9e2cdc29d3) switched from 
state CREATED to RUNNING.
12:38:59,740 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Status of job 4edcbd9b42d9cca157794e9e2cdc29d3 (Flink Streaming Job) changed 
to RUNNING.
12:38:59,741 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from CREATED to SCHEDULED.
12:38:59,741 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from CREATED to SCHEDULED.
12:38:59,741 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 36ff442eabcce42e2da5f1425560fb76
12:38:59,742 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from CREATED to SCHEDULED.
12:38:59,742 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from CREATED to SCHEDULED.
12:38:59,742 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 4077791c30fcc3ec7783f40d00613714
12:38:59,742 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from CREATED to SCHEDULED.
12:38:59,742 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 301c6e92cb81140887b965994fac704e
12:38:59,742 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from CREATED to SCHEDULED.
12:38:59,743 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 89ba38d0df4387549f1e874d3334ad97
12:38:59,743 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 5d472abf5d10a7c4ee69e011b6959353
12:38:59,743 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Cannot serve slot request, no ResourceManager connected. Adding as pending 
request 7173302fdb6a5d654e02ea35943345f3
12:38:59,744 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - 
Registered job manager 
1c41035e-ef27-436e-bd0a-434042290346@akka://flink/user/jobmanager_1 for job 
4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,746 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - JobManager successfully registered at ResourceManager, leader id: 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,746 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 4077791c30fcc3ec7783f40d00613714).
12:38:59,746 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
4077791c30fcc3ec7783f40d00613714.
12:38:59,747 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 4077791c30fcc3ec7783f40d00613714 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,748 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 36ff442eabcce42e2da5f1425560fb76).
12:38:59,748 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 5d472abf5d10a7c4ee69e011b6959353).
12:38:59,749 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 7173302fdb6a5d654e02ea35943345f3).
12:38:59,749 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 301c6e92cb81140887b965994fac704e).
12:38:59,749 INFO  org.apache.flink.runtime.instance.SlotPool                   
 - Requesting slot with profile ResourceProfile{cpuCores=-1.0, 
heapMemoryInMB=-1, directMemoryInMB=0, nativeMemoryInMB=0} from resource 
manager (request = 89ba38d0df4387549f1e874d3334ad97).
12:38:59,750 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
36ff442eabcce42e2da5f1425560fb76.
12:38:59,751 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
5d472abf5d10a7c4ee69e011b6959353.
12:38:59,752 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 4077791c30fcc3ec7783f40d00613714.
12:38:59,752 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,753 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 36ff442eabcce42e2da5f1425560fb76 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,753 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 36ff442eabcce42e2da5f1425560fb76.
12:38:59,753 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 5d472abf5d10a7c4ee69e011b6959353 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 5d472abf5d10a7c4ee69e011b6959353.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,754 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,755 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,755 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,755 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,755 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
7173302fdb6a5d654e02ea35943345f3.
12:38:59,755 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
301c6e92cb81140887b965994fac704e.
12:38:59,755 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - Request 
slot with profile ResourceProfile{cpuCores=-1.0, heapMemoryInMB=-1, 
directMemoryInMB=0, nativeMemoryInMB=0} for job 
4edcbd9b42d9cca157794e9e2cdc29d3 with allocation id 
89ba38d0df4387549f1e874d3334ad97.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 7173302fdb6a5d654e02ea35943345f3 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 7173302fdb6a5d654e02ea35943345f3.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 301c6e92cb81140887b965994fac704e for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 301c6e92cb81140887b965994fac704e.
12:38:59,756 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,757 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Receive slot request 89ba38d0df4387549f1e874d3334ad97 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from resource manager with leader id 
c79740f8-fa00-4eb8-84d2-10138390ada8.
12:38:59,757 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Allocated slot for 89ba38d0df4387549f1e874d3334ad97.
12:38:59,757 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,757 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,758 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,759 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,755 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,759 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,759 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,757 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Add job 4edcbd9b42d9cca157794e9e2cdc29d3 for job leader monitoring.
12:38:59,755 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,762 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Try to register at job manager akka://flink/user/jobmanager_1 with leader id 
1c41035e-ef27-436e-bd0a-434042290346.
12:38:59,763 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Resolved JobManager address, beginning registration
12:38:59,763 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Registration at JobManager attempt 1 (timeout=100ms)
12:38:59,763 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,764 INFO  org.apache.flink.runtime.taskexecutor.JobLeaderService       
 - Successful registration at job manager akka://flink/user/jobmanager_1 for 
job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,762 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,766 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-e1aca126-a878-48d8-928f-24a8cdec3821
12:38:59,770 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Offer reserved slots to the leader of job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 4077791c30fcc3ec7783f40d00613714.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 36ff442eabcce42e2da5f1425560fb76.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 5d472abf5d10a7c4ee69e011b6959353.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 7173302fdb6a5d654e02ea35943345f3.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 301c6e92cb81140887b965994fac704e.
12:38:59,771 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable     
 - Activate slot 89ba38d0df4387549f1e874d3334ad97.
12:38:59,784 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,784 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-d89c78c4-1314-49e6-bb8c-f3687e219c3d
12:38:59,786 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - The target with resource ID 226145e3fb640091eca783ef73dc1333 is already been 
monitored.
12:38:59,786 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,786 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-468c0558-8977-4261-82b8-f07292f8415a
12:38:59,787 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - The target with resource ID 226145e3fb640091eca783ef73dc1333 is already been 
monitored.
12:38:59,787 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,787 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-d7b3c569-0b58-4601-af32-bbb889d863b8
12:38:59,788 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - The target with resource ID 226145e3fb640091eca783ef73dc1333 is already been 
monitored.
12:38:59,788 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,789 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-d3f356e2-c965-4400-9677-37dbb2f23971
12:38:59,789 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - The target with resource ID 226145e3fb640091eca783ef73dc1333 is already been 
monitored.
12:38:59,789 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Establish JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:38:59,789 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Created BLOB cache storage directory 
/tmp/blobStore-d000c3bb-0423-46b7-94ff-4533fb496aaf
12:38:59,790 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - The target with resource ID 226145e3fb640091eca783ef73dc1333 is already been 
monitored.
12:38:59,798 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from SCHEDULED to DEPLOYING.
12:38:59,798 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Source: Sequence Source (1/3) (attempt #0) to localhost
12:38:59,807 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from SCHEDULED to DEPLOYING.
12:38:59,807 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Source: Sequence Source (2/3) (attempt #0) to localhost
12:38:59,807 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from SCHEDULED to DEPLOYING.
12:38:59,808 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Source: Sequence Source (3/3) (attempt #0) to localhost
12:38:59,808 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from SCHEDULED to DEPLOYING.
12:38:59,808 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Filter -> Sink: Unnamed (1/3) (attempt #0) to localhost
12:38:59,810 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from SCHEDULED to DEPLOYING.
12:38:59,810 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Filter -> Sink: Unnamed (2/3) (attempt #0) to localhost
12:38:59,811 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from SCHEDULED to DEPLOYING.
12:38:59,811 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Deploying Filter -> Sink: Unnamed (3/3) (attempt #0) to localhost
12:38:59,835 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Source: Sequence Source (1/3).
12:38:59,838 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Source: Sequence Source (2/3).
12:38:59,841 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from CREATED to DEPLOYING.
12:38:59,842 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Source: Sequence Source 
(1/3) (fb89023001ac7ae37953fbac1a00652c) [DEPLOYING]
12:38:59,847 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Source: Sequence Source (3/3).
12:38:59,847 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from CREATED to DEPLOYING.
12:38:59,848 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Source: Sequence Source 
(2/3) (987b738a072a184f2075b127f21df794) [DEPLOYING]
12:38:59,862 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Source: Sequence Source (1/3) 
(fb89023001ac7ae37953fbac1a00652c) [DEPLOYING].
12:38:59,866 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Source: Sequence Source (1/3) 
(fb89023001ac7ae37953fbac1a00652c) [DEPLOYING].
12:38:59,867 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Source: Sequence Source (2/3) 
(987b738a072a184f2075b127f21df794) [DEPLOYING].
12:38:59,870 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Source: Sequence Source (2/3) 
(987b738a072a184f2075b127f21df794) [DEPLOYING].
12:38:59,875 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from CREATED to DEPLOYING.
12:38:59,875 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Source: Sequence Source 
(3/3) (e36e2811c6f205facefd1195a2a3d183) [DEPLOYING]
12:38:59,875 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Source: Sequence Source (3/3) 
(e36e2811c6f205facefd1195a2a3d183) [DEPLOYING].
12:38:59,876 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Source: Sequence Source (3/3) 
(e36e2811c6f205facefd1195a2a3d183) [DEPLOYING].
12:38:59,876 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Filter -> Sink: Unnamed (1/3).
12:38:59,879 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from CREATED to DEPLOYING.
12:38:59,879 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Filter -> Sink: Unnamed 
(1/3) (6ac1d973b37ddf0809005158a83892a4) [DEPLOYING]
12:38:59,880 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Filter -> Sink: Unnamed (1/3) 
(6ac1d973b37ddf0809005158a83892a4) [DEPLOYING].
12:38:59,881 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Filter -> Sink: Unnamed (2/3).
12:38:59,881 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Filter -> Sink: Unnamed (1/3) 
(6ac1d973b37ddf0809005158a83892a4) [DEPLOYING].
12:38:59,886 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from DEPLOYING to RUNNING.
12:38:59,887 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from DEPLOYING to RUNNING.
12:38:59,887 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from DEPLOYING to RUNNING.
12:38:59,890 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Received task Filter -> Sink: Unnamed (3/3).
12:38:59,891 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from DEPLOYING to RUNNING.
12:38:59,891 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from CREATED to DEPLOYING.
12:38:59,891 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from DEPLOYING to RUNNING.
12:38:59,891 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Filter -> Sink: Unnamed 
(2/3) (f1a2286709bf333f4dd8f24b4813a964) [DEPLOYING]
12:38:59,891 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Filter -> Sink: Unnamed (2/3) 
(f1a2286709bf333f4dd8f24b4813a964) [DEPLOYING].
12:38:59,892 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Filter -> Sink: Unnamed (2/3) 
(f1a2286709bf333f4dd8f24b4813a964) [DEPLOYING].
12:38:59,892 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from DEPLOYING to RUNNING.
12:38:59,892 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,892 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,893 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from DEPLOYING to RUNNING.
12:38:59,893 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from DEPLOYING to RUNNING.
12:38:59,893 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from DEPLOYING to RUNNING.
12:38:59,894 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from CREATED to DEPLOYING.
12:38:59,894 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Creating FileSystem stream leak safety net for task Filter -> Sink: Unnamed 
(3/3) (6735fc301957d96c817e09b14c35ac27) [DEPLOYING]
12:38:59,894 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Loading JAR files for task Filter -> Sink: Unnamed (3/3) 
(6735fc301957d96c817e09b14c35ac27) [DEPLOYING].
12:38:59,895 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,896 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from DEPLOYING to RUNNING.
12:38:59,899 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,901 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,903 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Registering task at network: Filter -> Sink: Unnamed (3/3) 
(6735fc301957d96c817e09b14c35ac27) [DEPLOYING].
12:38:59,903 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from DEPLOYING to RUNNING.
12:38:59,904 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from DEPLOYING to RUNNING.
12:38:59,904 INFO  org.apache.flink.streaming.runtime.tasks.StreamTask          
 - No state backend has been configured, using default state backend (Memory / 
JobManager)
12:38:59,964 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from RUNNING to FINISHED.
12:38:59,964 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Source: Sequence Source (1/3) 
(fb89023001ac7ae37953fbac1a00652c).
12:38:59,964 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Source: Sequence Source 
(1/3) (fb89023001ac7ae37953fbac1a00652c) [FINISHED]
12:38:59,965 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from RUNNING to FINISHED.
12:38:59,965 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Filter -> Sink: Unnamed (1/3) 
(6ac1d973b37ddf0809005158a83892a4).
12:38:59,965 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Filter -> Sink: Unnamed 
(1/3) (6ac1d973b37ddf0809005158a83892a4) [FINISHED]
12:38:59,966 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from RUNNING to FINISHED.
12:38:59,966 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Source: Sequence Source (2/3) 
(987b738a072a184f2075b127f21df794).
12:38:59,966 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Source: Sequence Source 
(2/3) (987b738a072a184f2075b127f21df794) [FINISHED]
12:38:59,966 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Source: Sequence Source fb89023001ac7ae37953fbac1a00652c.
12:38:59,967 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from RUNNING to FINISHED.
12:38:59,967 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Filter -> Sink: Unnamed (2/3) 
(f1a2286709bf333f4dd8f24b4813a964).
12:38:59,967 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Filter -> Sink: Unnamed 
(2/3) (f1a2286709bf333f4dd8f24b4813a964) [FINISHED]
12:38:59,973 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (1/3) (fb89023001ac7ae37953fbac1a00652c) switched 
from RUNNING to FINISHED.
12:38:59,974 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Filter -> Sink: Unnamed 6ac1d973b37ddf0809005158a83892a4.
12:38:59,975 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from RUNNING to FINISHED.
12:38:59,975 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Source: Sequence Source (3/3) 
(e36e2811c6f205facefd1195a2a3d183).
12:38:59,975 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Source: Sequence Source 
(3/3) (e36e2811c6f205facefd1195a2a3d183) [FINISHED]
12:38:59,980 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (1/3) (6ac1d973b37ddf0809005158a83892a4) switched 
from RUNNING to FINISHED.
12:38:59,980 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Source: Sequence Source 987b738a072a184f2075b127f21df794.
12:38:59,981 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (2/3) (987b738a072a184f2075b127f21df794) switched 
from RUNNING to FINISHED.
12:38:59,982 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Filter -> Sink: Unnamed f1a2286709bf333f4dd8f24b4813a964.
12:38:59,983 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (2/3) (f1a2286709bf333f4dd8f24b4813a964) switched 
from RUNNING to FINISHED.
12:38:59,984 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Source: Sequence Source e36e2811c6f205facefd1195a2a3d183.
12:38:59,985 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Source: Sequence Source (3/3) (e36e2811c6f205facefd1195a2a3d183) switched 
from RUNNING to FINISHED.
12:38:59,999 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from RUNNING to FINISHED.
12:39:00,000 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Freeing task resources for Filter -> Sink: Unnamed (3/3) 
(6735fc301957d96c817e09b14c35ac27).
12:39:00,000 INFO  org.apache.flink.runtime.taskmanager.Task                    
 - Ensuring all FileSystem streams are closed for task Filter -> Sink: Unnamed 
(3/3) (6735fc301957d96c817e09b14c35ac27) [FINISHED]
12:39:00,000 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Un-registering task and sending final execution state FINISHED to JobManager 
for task Filter -> Sink: Unnamed 6735fc301957d96c817e09b14c35ac27.
12:39:00,002 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Filter -> Sink: Unnamed (3/3) (6735fc301957d96c817e09b14c35ac27) switched 
from RUNNING to FINISHED.
12:39:00,002 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph       
 - Job Flink Streaming Job (4edcbd9b42d9cca157794e9e2cdc29d3) switched from 
state RUNNING to FINISHED.
12:39:00,002 INFO  org.apache.flink.runtime.checkpoint.CheckpointCoordinator    
 - Stopping checkpoint coordinator for job 4edcbd9b42d9cca157794e9e2cdc29d3
12:39:00,002 INFO  
org.apache.flink.runtime.checkpoint.StandaloneCompletedCheckpointStore  - 
Shutting down
12:39:00,002 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Status of job 4edcbd9b42d9cca157794e9e2cdc29d3 (Flink Streaming Job) changed 
to FINISHED.
12:39:00,006 INFO  
org.apache.flink.runtime.resourcemanager.StandaloneResourceManager  - 
Disconnect job manager 
1c41035e-ef27-436e-bd0a-434042290346@akka://flink/user/jobmanager_1 for job 
4edcbd9b42d9cca157794e9e2cdc29d3 from the resource manager.
12:39:00,006 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,007 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,007 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,007 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,007 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,007 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,008 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - JobManager for job 4edcbd9b42d9cca157794e9e2cdc29d3 with leader id 
1c41035e-ef27-436e-bd0a-434042290346 lost leadership.
12:39:00,008 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Trigger shut down of RPC endpoint akka://flink/user/jobmanager_1.
12:39:00,008 INFO  org.apache.flink.runtime.blob.BlobCache                      
 - Shutting down BlobCache
12:39:00,013 INFO  org.apache.flink.runtime.blob.BlobServer                     
 - Stopped BLOB server at 0.0.0.0:40558
12:39:00,014 INFO  org.apache.flink.runtime.minicluster.MiniCluster             
 - Shutting down Flink Mini Cluster
12:39:00,014 INFO  
org.apache.flink.runtime.minicluster.MiniClusterJobDispatcher  - Shutting down 
the job dispatcher
12:39:00,014 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Trigger shut down of RPC endpoint akka://flink/user/resourcemanager_0.
12:39:00,015 INFO  
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Closing the 
SlotManager.
12:39:00,015 INFO  
org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager  - Suspending 
the SlotManager.
12:39:00,014 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Close ResourceManager connection ee59ee8ea0ec7be58b8874633e57e365.
java.lang.Exception: Job leader lost leadership.
        at 
org.apache.flink.runtime.resourcemanager.ResourceManager.jobLeaderLostLeadership(ResourceManager.java:796)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManager$JobLeaderIdActionsImpl$1.run(ResourceManager.java:1013)
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:287)
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:140)
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.access$000(AkkaRpcActor.java:71)
        at 
org.apache.flink.runtime.rpc.akka.AkkaRpcActor$1.apply(AkkaRpcActor.java:119)
        at 
akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:534)
        at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
        at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
        at akka.actor.ActorCell.invoke(ActorCell.scala:487)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
        at akka.dispatch.Mailbox.run(Mailbox.scala:220)
        at 
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at 
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at 
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at 
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
12:39:00,015 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,026 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,026 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,026 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,026 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Close JobManager connection for job 4edcbd9b42d9cca157794e9e2cdc29d3.
12:39:00,026 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Current ResourceManager akka://flink/user/resourcemanager_0 lost leader 
status. Waiting for new ResourceManager leader.
12:39:00,025 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Trigger shut down of RPC endpoint akka://flink/user/taskmanager_0.
12:39:00,026 INFO  org.apache.flink.runtime.rpc.akka.AkkaRpcService             
 - Stopping Akka RPC service.
12:39:00,027 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Stopping TaskManager akka://flink/user/taskmanager_0.
12:39:00,028 INFO  org.apache.flink.runtime.io.disk.iomanager.IOManager         
 - I/O manager removed spill file directory 
/tmp/flink-io-b4293dd8-c902-46f3-b6f8-0f9730cf84f5
12:39:00,028 INFO  org.apache.flink.runtime.io.network.NetworkEnvironment       
 - Shutting down the network environment and its components.
12:39:00,046 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           
 - Stopped TaskManager akka://flink/user/taskmanager_0.
12:39:00,066 INFO  org.apache.flink.runtime.jobmaster.JobMaster                 
 - Heartbeat of TaskManager with id 3b5cc819-a053-4360-a0d8-db0e29e00fc8 timed 
out.
12:39:00,068 ERROR 
org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase  - 
--------------------------------------------------------------------------------
Test 
testRunIsolatedJob(org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase)
 failed with:
java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
        at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
        at 
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.clear(JobLeaderIdService.java:120)
        at 
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.stop(JobLeaderIdService.java:98)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRuntimeServices.shutDown(ResourceManagerRuntimeServices.java:51)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDownInternally(ResourceManagerRunner.java:107)
        at 
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDown(ResourceManagerRunner.java:94)
        at 
org.apache.flink.runtime.minicluster.MiniCluster.shutdownInternally(MiniCluster.java:341)
        at 
org.apache.flink.runtime.minicluster.MiniCluster.shutdown(MiniCluster.java:309)
        at 
org.apache.flink.streaming.api.environment.Flip6LocalStreamEnvironment.execute(Flip6LocalStreamEnvironment.java:124)
        at 
org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1501)
        at 
org.apache.flink.streaming.api.environment.LocalStreamEnvironmentITCase.testRunIsolatedJob(LocalStreamEnvironmentITCase.java:45)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
        at 
org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
        at 
org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
        at 
org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
{code}



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