Hi

I am encounter an issue that the executor actor could not connect to Driver 
actor. But I could not figure out what's the reason.

Say the Driver actor is listening on :35838

root@sr434:~# netstat -lpv
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       
PID/Program name
tcp        0      0 *:50075                 *:*                     LISTEN      
18242/java
tcp        0      0 *:50020                 *:*                     LISTEN      
18242/java
tcp        0      0 *:ssh                   *:*                     LISTEN      
1325/sshd
tcp        0      0 *:50010                 *:*                     LISTEN      
18242/java
tcp6       0      0 sr434:35838             [::]:*                  LISTEN      
9420/java
tcp6       0      0 [::]:40390              [::]:*                  LISTEN      
9420/java
tcp6       0      0 [::]:4040               [::]:*                  LISTEN      
9420/java
tcp6       0      0 [::]:8040               [::]:*                  LISTEN      
28324/java
tcp6       0      0 [::]:60712              [::]:*                  LISTEN      
28324/java
tcp6       0      0 [::]:8042               [::]:*                  LISTEN      
28324/java
tcp6       0      0 [::]:34028              [::]:*                  LISTEN      
9420/java
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN      
1325/sshd
tcp6       0      0 [::]:45528              [::]:*                  LISTEN      
9420/java
tcp6       0      0 [::]:13562              [::]:*                  LISTEN      
28324/java


while the executor driver report errors as below :

13/11/01 13:16:43 INFO executor.CoarseGrainedExecutorBackend: Connecting to 
driver: akka://spark@sr434:35838/user/CoarseGrainedScheduler
13/11/01 13:16:43 ERROR executor.CoarseGrainedExecutorBackend: Driver 
terminated or disconnected! Shutting down.

Any idea?

Best Regards,
Raymond Liu

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