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From "Andrew Onischuk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-8890) Ambari detects hive processes by pid, not reliable method
Date Tue, 23 Dec 2014 15:52:13 GMT
Andrew Onischuk created AMBARI-8890:
---------------------------------------

             Summary: Ambari detects hive processes by pid, not reliable method
                 Key: AMBARI-8890
                 URL: https://issues.apache.org/jira/browse/AMBARI-8890
             Project: Ambari
          Issue Type: Bug
            Reporter: Andrew Onischuk
            Assignee: Andrew Onischuk
             Fix For: 2.0.0


PROBLEM:

Ambari 1.6.1 detects whether processes are running by the presence of pid
files. This may not be a problem for datanodes and nodemanagers, but it is a
problem for hive metastore and hiveserver2. If there are hive metastore and
hive server2 processes running, but pid files are missing, Ambari will start
another instance. The end result is that hive services will not function.

There have been quite some customers encountered this problem. Ambari should
not rely on pid file.





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