2020-06-19 15:11:18,361 INFO  org.apache.flink.client.cli.CliFrontend           
            - Triggering savepoint for job e229c76e6a1b43142cb4272523102ed1.
2020-06-19 15:11:18,378 INFO  org.apache.flink.client.cli.CliFrontend           
            - Waiting for response...
2020-06-19 15:11:48,381 INFO  
org.apache.flink.runtime.leaderretrieval.ZooKeeperLeaderRetrievalService  - 
Stopping ZooKeeperLeaderRetrievalService /leader/rest_server_lock.
2020-06-19 15:11:48,382 INFO  
org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorFrameworkImpl
  - backgroundOperationsLoop exiting
2020-06-19 15:11:48,385 INFO  
org.apache.flink.shaded.zookeeper.org.apache.zookeeper.ZooKeeper  - Session: 
0x172b776fac82479 closed
2020-06-19 15:11:48,385 INFO  
org.apache.flink.shaded.zookeeper.org.apache.zookeeper.ClientCnxn  - 
EventThread shut down for session: 0x172b776fac82479
2020-06-19 15:11:48,385 ERROR org.apache.flink.client.cli.CliFrontend           
            - Error while running the command.
org.apache.flink.util.FlinkException: Triggering a savepoint for the job 
e229c76e6a1b43142cb4272523102ed1 failed.
        at 
org.apache.flink.client.cli.CliFrontend.triggerSavepoint(CliFrontend.java:633)
        at 
org.apache.flink.client.cli.CliFrontend.lambda$savepoint$9(CliFrontend.java:611)
        at 
org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843)
        at 
org.apache.flink.client.cli.CliFrontend.savepoint(CliFrontend.java:608)
        at 
org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:910)
        at 
org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1875)
        at 
org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
        at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968)
Caused by: java.util.concurrent.TimeoutException
        at 
org.apache.flink.runtime.concurrent.FutureUtils$Timeout.run(FutureUtils.java:999)
        at 
org.apache.flink.runtime.concurrent.DirectExecutorService.execute(DirectExecutorService.java:211)
        at 
org.apache.flink.runtime.concurrent.FutureUtils.lambda$orTimeout$14(FutureUtils.java:427)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

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