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https://issues.apache.org/jira/browse/AMBARI-3306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jeff Sposetti updated AMBARI-3306:
----------------------------------

    Description: 
Went thru and make some ambari-server changes -- don't have steps to repro -- 
but it resulted in the ambari-server.pid file to empty (file exists but 0 size).

ambari-server start or status command caused a traceback but this did not 
provide enough into to fix. We deleted /var/run/ambari-server/ambari-server.pid 
and things were OK.

{code}
ec2-user@ip-10-111-19-223 ambari-server]$ ambari-server status
Using python  /usr/bin/python2.6
Ambari-server status
Traceback (most recent call last):
  File "/usr/sbin/ambari-server.py", line 3988, in <module>
    main() 
  File "/usr/sbin/ambari-server.py", line 3813, in main
    status(options)
  File "/usr/sbin/ambari-server.py", line 2471, in status
    status, pid = is_server_runing()
  File "/usr/sbin/ambari-server.py", line 3221, in is_server_runing
    pid = int(f.readline())
ValueError: invalid literal for int() with base 10: ''
{code}

Regardless of how we got to an empty .pid file, ambari-server should handle an 
empty .pid file and print a more appropriate message (and not a traceback). At 
least that would give the user something to go look at.

{code}
ERROR: unable to read /var/run/ambari-server/ambari-server.pid
{code}

Additionally, if we find the file is 0 size, should we print this error and 
just delete the file automatically (well, tell them we are removing first).

{code}
ERROR: /var/run/ambari-server/ambari-server.pid is empty. Removing.
ERROR: unable to read /var/run/ambari-server/ambari-server.pid
{code}

  was:
Went thru and make some ambari-server changes -- don't have steps to repro -- 
but it resulted in the ambari-server.pid file to empty (file exists but 0 size).

ambari-server start or status command caused a traceback. The customer didn't 
know how to fix. We deleted /var/run/ambari-server/ambari-server.pid and things 
were OK.

{code}
ec2-user@ip-10-111-19-223 ambari-server]$ ambari-server status
Using python  /usr/bin/python2.6
Ambari-server status
Traceback (most recent call last):
  File "/usr/sbin/ambari-server.py", line 3988, in <module>
    main() 
  File "/usr/sbin/ambari-server.py", line 3813, in main
    status(options)
  File "/usr/sbin/ambari-server.py", line 2471, in status
    status, pid = is_server_runing()
  File "/usr/sbin/ambari-server.py", line 3221, in is_server_runing
    pid = int(f.readline())
ValueError: invalid literal for int() with base 10: ''
{code}

Regardless of how we got to an empty .pid file, ambari-server should handle an 
empty .pid file and print a more appropriate message (and not a traceback). At 
least that would give the user something to go look at.

{code}
ERROR: unable to read /var/run/ambari-server/ambari-server.pid
{code}

Additionally, if we find the file is 0 size, should we print this error and 
just delete the file automatically (well, tell them we are removing first).

{code}
ERROR: /var/run/ambari-server/ambari-server.pid is empty. Removing.
ERROR: unable to read /var/run/ambari-server/ambari-server.pid
{code}

    
> Empty ambari server .pid causes Traceback
> -----------------------------------------
>
>                 Key: AMBARI-3306
>                 URL: https://issues.apache.org/jira/browse/AMBARI-3306
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: 1.4.1
>            Reporter: Jeff Sposetti
>
> Went thru and make some ambari-server changes -- don't have steps to repro -- 
> but it resulted in the ambari-server.pid file to empty (file exists but 0 
> size).
> ambari-server start or status command caused a traceback but this did not 
> provide enough into to fix. We deleted 
> /var/run/ambari-server/ambari-server.pid and things were OK.
> {code}
> ec2-user@ip-10-111-19-223 ambari-server]$ ambari-server status
> Using python  /usr/bin/python2.6
> Ambari-server status
> Traceback (most recent call last):
>   File "/usr/sbin/ambari-server.py", line 3988, in <module>
>     main() 
>   File "/usr/sbin/ambari-server.py", line 3813, in main
>     status(options)
>   File "/usr/sbin/ambari-server.py", line 2471, in status
>     status, pid = is_server_runing()
>   File "/usr/sbin/ambari-server.py", line 3221, in is_server_runing
>     pid = int(f.readline())
> ValueError: invalid literal for int() with base 10: ''
> {code}
> Regardless of how we got to an empty .pid file, ambari-server should handle 
> an empty .pid file and print a more appropriate message (and not a 
> traceback). At least that would give the user something to go look at.
> {code}
> ERROR: unable to read /var/run/ambari-server/ambari-server.pid
> {code}
> Additionally, if we find the file is 0 size, should we print this error and 
> just delete the file automatically (well, tell them we are removing first).
> {code}
> ERROR: /var/run/ambari-server/ambari-server.pid is empty. Removing.
> ERROR: unable to read /var/run/ambari-server/ambari-server.pid
> {code}

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