It’s standard 1.3.2 on Java 7. We don’t use custom flink builds, just pull down 
whats in maven.


From: Stephan Ewen [mailto:se...@apache.org]
Sent: Friday, May 11, 2018 2:27 PM
To: user@flink.apache.org
Cc: Chan, Regina [Tech]; Newport, Billy [Tech]; Fabian Hueske
Subject: Re: Lost JobManager

Hi!

This somehow looks like the YARN shutdown call overtakes the call that marks 
the Job as successful. That should not be the case.

Looking at the logs, you are running a Java 7 installation, so I assume this 
must be some Flink 1.3.x based build. Can you let us know which version this is 
based on exactly?

Best,
Stephan



On Tue, May 8, 2018 at 9:20 PM, Fabian Hueske 
<fhue...@gmail.com<mailto:fhue...@gmail.com>> wrote:
Hi,
I noticed that you configured the Akka framesize to 2GB (the default being 
10MB).
This appears like quite a lot to me and might be causing problems since the 
exceptions indicate an Akka timeout issue.
Did configure the framesize for a particular reason that high?
It seems that you are running a custom build of Flink. Which version did you 
base your build on?
Best, Fabian

2018-05-08 17:41 GMT+02:00 Chan, Regina 
<regina.c...@gs.com<mailto:regina.c...@gs.com>>:
There’s no collect() explicitly from me. It has a cogroup operator before 
writing to DataSink.


From: Fabian Hueske [mailto:fhue...@gmail.com<mailto:fhue...@gmail.com>]
Sent: Monday, May 07, 2018 6:31 AM
To: Chan, Regina [Tech]
Cc: user@flink.apache.org<mailto:user@flink.apache.org>; Newport, Billy [Tech]
Subject: Re: Lost JobManager

Hi Regina,
I see from the logs that you are using the DataSet API.
Are you trying to fetch a large result to your client using the collect() 
method?
Best, Fabian

2018-05-02 0:38 GMT+02:00 Chan, Regina 
<regina.c...@gs.com<mailto:regina.c...@gs.com>>:
Hi,

I’m running a single TM with the following params -yn 1 -ys 2 -yjm 36864 -ytm 
24576 -yD akka.framesize=2097152000b

I keep repeatedly getting this error where I’m losing connection to the 
JobManager. It’s not clear why, it seems like the job is finishing up until the 
Datasink but the JobManager is lost before that completes. I’ve attached the 
jobmanager logs. Snippet further below.

org.apache.flink.client.program.ProgramInvocationException: The program 
execution failed: Couldn't retrieve the JobExecutionResult from the JobManager.
        at 
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:478)
        at 
org.apache.flink.yarn.YarnClusterClient.submitJob(YarnClusterClient.java:205)
        at 
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:442)
        at 
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:429)
        at 
org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:62)
        at 
org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:926)
        at 
com.gs.ep.da.lake.refinerlib.flink.FlowDataBase.execute(FlowDataBase.java:40)
        at 
com.gs.ep.da.lake.refinerlib.flink.FlowData.runPartialDataFlow(FlowData.java:148)
        at com.gs.ep.da.lake.refinerlib.flink.FlowData.call(FlowData.java:56)
        at com.gs.ep.da.lake.refinerlib.flink.FlowData.call(FlowData.java:24)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.flink.runtime.client.JobExecutionException: Couldn't 
retrieve the JobExecutionResult from the JobManager.
        at 
org.apache.flink.runtime.client.JobClient.awaitJobResult(JobClient.java:309)
        at 
org.apache.flink.runtime.client.JobClient.submitJobAndWait(JobClient.java:396)
        at 
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:467)
        ... 15 more
Caused by: 
org.apache.flink.runtime.client.JobClientActorConnectionTimeoutException: Lost 
connection to the JobManager.
        at 
org.apache.flink.runtime.client.JobClientActor.handleMessage(JobClientActor.java:219)
        at 
org.apache.flink.runtime.akka.FlinkUntypedActor.handleLeaderSessionID(FlinkUntypedActor.java:101)
        at 
org.apache.flink.runtime.akka.FlinkUntypedActor.onReceive(FlinkUntypedActor.java:68)
        at 
akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167)
        at akka.actor.Actor$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)


--------------
Jobmanager logs below:

506735 [flink-akka.actor.default-dispatcher-18] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Map (Map at 
handleMilestoning(MergeTask.java:287)) (1/1) (b688af3e269a022daa48e1db7adf4b34) 
switched from RUNNING to FINISHED.
857174 [flink-akka.actor.default-dispatcher-19] INFO 
org.apache.flink.yarn.YarnJobManager - Stopping JobManager with final 
application status SUCCEEDED and diagnostics: Flink YARN Client requested 
shutdown
857175 [flink-akka.actor.default-dispatcher-21] INFO 
org.apache.flink.yarn.YarnFlinkResourceManager - Shutting down cluster with 
status SUCCEEDED : Flink YARN Client requested shutdown
857176 [flink-akka.actor.default-dispatcher-21] INFO 
org.apache.flink.yarn.YarnFlinkResourceManager - Unregistering application from 
the YARN Resource Manager
857180 [flink-akka.actor.default-dispatcher-21] INFO 
org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl - Waiting for application 
to be successfully unregistered.
857282 [AMRM Callback Handler Thread] INFO 
org.apache.hadoop.yarn.client.api.async.impl.AMRMClientAsyncImpl - Interrupted 
while waiting for queue
java.lang.InterruptedException   at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2017)
            at 
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2052)
            at 
java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
            at 
org.apache.hadoop.yarn.client.api.async.impl.AMRMClientAsyncImpl$CallbackHandlerThread.run(AMRMClientAsyncImpl.java:275)
857323 [flink-akka.actor.default-dispatcher-21] ERROR 
org.apache.hadoop.yarn.client.api.impl.NMClientImpl - Failed to stop Container 
container_1524967251050_56140_01_000003when stopping NMClientImpl
857323 [flink-akka.actor.default-dispatcher-21] INFO 
org.apache.hadoop.yarn.client.api.impl.ContainerManagementProtocolProxy - 
Closing proxy : d191291-019.dc.gs.com:45454<http://d191291-019.dc.gs.com:45454>
857326 [flink-akka.actor.default-dispatcher-19] INFO 
org.apache.flink.yarn.YarnJobManager - Deleting yarn application files under 
hdfs://d191291/user/delp/.flink/application_1524967251050_56140.
857326 [flink-akka.actor.default-dispatcher-27] ERROR 
org.apache.flink.yarn.YarnApplicationMasterRunner - Actor 
akka://flink/user/$b#256544107 terminated, stopping process...
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.http.authentication.kerberos.keytab;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.http.authentication.kerberos.principal;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.http.authentication.signature.secret.file;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.http.authentication.simple.anonymous.allowed;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.http.authentication.type;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.kerberos.kinit.command;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.rpc.protection;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.auth_to_local;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.authentication;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.authorization;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.group.mapping;  Ignoring.
857345 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.group.mapping.ldap.base;  
Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.security.group.mapping.ldap.bind.password.file;  Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.security.group.mapping.ldap.search.attr.group.name<https://urldefense.proofpoint.com/v2/url?u=http-3A__hadoop.security.group.mapping.ldap.search.attr.group.name&d=DwMFaQ&c=7563p3e2zaQw0AB1wrFVgyagb2IE5rTZOYPxLxfZlX4&r=vus_2CMQfE0wKmJ4Q_gOWWsBmKlgzMeEwtqShIeKvak&m=Ww2hPp6X8ppGooZTMuCR2cJVwSQ4M6EoagwzMM87j-Y&s=hUHwzsw2Dw126sqpY6lFqkaIhtSlCn3uRoW3LSxCmzw&e=>;
  Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.security.group.mapping.ldap.search.attr.member;  Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
hadoop.security.group.mapping.ldap.search.filter.group;  Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: hadoop.security.group.mapping.ldap.url;  
Ignoring.
857346 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/core-site.xml:an 
attempt to override final parameter: 
ipc.client.fallback-to-simple-auth-allowed;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.block.access.token.enable;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: 
dfs.client.block.write.replace-datanode-on-failure.policy;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.client.read.shortcircuit;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.cluster.administrators;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.datanode.address;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.datanode.http.address;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.datanode.ipc.address;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.datanode.kerberos.principal;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.datanode.keytab.file;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.domain.socket.path;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.hosts;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.hosts.exclude;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: 
dfs.namenode.kerberos.internal.spnego.principal;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.namenode.kerberos.principal;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.namenode.keytab.file;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.permissions.superusergroup;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: 
dfs.secondary.namenode.kerberos.internal.spnego.principal;  Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.secondary.namenode.kerberos.principal; 
 Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.secondary.namenode.keytab.file;  
Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.web.authentication.kerberos.keytab;  
Ignoring.
857347 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.conf.Configuration - 
/gns/software/infra/big-data/hadoop/hdp-2.2.gs6/hadoop/conf/hdfs-site.xml:an 
attempt to override final parameter: dfs.web.authentication.kerberos.principal; 
 Ignoring.
857349 [flink-akka.actor.default-dispatcher-19] WARN 
org.apache.hadoop.hdfs.BlockReaderLocal - The short-circuit local reads feature 
cannot be used because libhadoop cannot be loaded.
857356 [flink-akka.actor.default-dispatcher-19] INFO 
org.apache.flink.yarn.YarnJobManager - Stopping JobManager 
akka.tcp://fl...@d191291-053.dc.gs.com:33812/user/jobmanager<http://fl...@d191291-053.dc.gs.com:33812/user/jobmanager>.
857357 [flink-akka.actor.default-dispatcher-21] INFO 
org.apache.flink.runtime.executiongraph.ExecutionGraph - Job Flink Java Job at 
Tue May 01 17:58:37 EDT 2018 (1673e636d863ff81916b47c4296ed026) switched from 
state RUNNING to SUSPENDED.
java.lang.Exception: The JobManager is shutting down.
            at 
org.apache.flink.runtime.jobmanager.JobManager.postStop(JobManager.scala:240)
            at akka.actor.Actor$class.aroundPostStop(Actor.scala:477)
            at 
org.apache.flink.runtime.jobmanager.JobManager.aroundPostStop(JobManager.scala:125)
            at 
akka.actor.dungeon.FaultHandling$class.akka$actor$dungeon$FaultHandling$$finishTerminate(FaultHandling.scala:210)
            at 
akka.actor.dungeon.FaultHandling$class.terminate(FaultHandling.scala:172)
            at akka.actor.ActorCell.terminate(ActorCell.scala:369)
            at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:462)
            at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)
            at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)
            at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:241)
            at akka.dispatch.Mailbox.run(Mailbox.scala:220)
            at 
akka.dispatch.ForkJoinExecutorConfigurator$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)

Regina Chan
Goldman Sachs – Enterprise Platforms, Data Architecture
30 Hudson Street, 37th floor | Jersey City, NY 
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