This is probably due to Ambari agent. If you look at the ambari agent logs, you
might see logs like
2015-02-14 23:32:22,412 – User[‘yarn’] {‘gid': ‘hadoop’, ‘ignore_failures':
False, ‘groups': [u’hadoop’]}
2015-02-14 23:32:22,412 – Modifying user yarn
Where it resets the group for the yarn user.
-Varun
From: REYANE OUKPEDJO
Reply-To: <user@hadoop.apache.org>
Date: Tuesday, August 25, 2015 at 6:15 AM
To: User Hadoop
Subject: yarn groups issue with ambari/hortonworks
Hi there,
I faced some weird issue and I think there is no need to give many details
other than the actual issue.
When I add the user yarn to another group, I could see from within the same
shell where I added him that yarn belongs to the new group . But after
restarting the node manager through ambari and open a new shell , I can see
that yarn user no longer belongs to the new group. My question is whether
ambari is removoig the yarn user from any group other than it's primary one.
Any response to this will be appreciated.
Thanks
Reyane OUKPEDJO
