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From "Jonathan Hurley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-17319) Provide More Warnings and Messages About Hive's Port Change During Upgrade
Date Tue, 21 Jun 2016 12:42:58 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-17319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Hurley updated AMBARI-17319:
-------------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> Provide More Warnings and Messages About Hive's Port Change During Upgrade
> --------------------------------------------------------------------------
>
>                 Key: AMBARI-17319
>                 URL: https://issues.apache.org/jira/browse/AMBARI-17319
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.4.0
>            Reporter: Jonathan Hurley
>            Assignee: Jonathan Hurley
>            Priority: Critical
>             Fix For: 2.4.0
>
>         Attachments: AMBARI-17319.patch
>
>
> After upgrading from HDP 2.2.4.2 to HDP 2.3.2, the {{hive.server2.thrift.port}} changed
from 10000 to 10010.
> For users and applications which reference Hive via a direct URL/port combination instead
of a discovery URL, they will no longer be able to contact Hive.
> Due to the timing of the next Ambari release, there is a risk of regression with any
attempt to fix this issue. The best option is to provide a more wizard-like approach where
Ambari can use the upgrade packs to ask questions pertaining to the upgrade. The results of
those questions will be passed along with the upgrade pack when starting an upgrade so that
rudimentary decision paths can be taken while performing orchestration. *However, this is
out of scope for this release*. 
> Instead, the following tasks can be chosen to be implemented in part or as a whole in
an attempt to alleviate this issue. 
> *Recommended*
> h5. Task 1 (Simple Messages)
> h6. Development effort: 1 day
> - A new pre-requisite check will be created which will determine if the upgrade is rolling
and if Hive is installed. If both conditions are met, a {{WARNING}} will be triggered which
will say something similar to:
> bq. You have chosen to perform a rolling upgrade and Hive is currently installed. Hive
supports rolling upgrades, but its port will change as a result of the upgrade. If this is
not the desired behavior, then the port can be changed back to its original value after the
upgrade has completed. 
> - A new message will be added and displayed to the user post-finalization.
> bq. The hive server port has changed as a result of this rolling upgrade. If this port
change is not desired, then you can now use Ambari to return hive to its original port. 
> h5. Task 2 (Messages To Alter Configurations)
> h6. Development effort: 4 days total
> - A new pre-requisite check will be created which will determine if the upgrade is rolling
and if Hive is installed. If both conditions are met, a {{WARNING}} will be triggered which
will say something similar to:
> bq. You have chosen to perform a rolling upgrade and Hive is currently installed. Hive
supports rolling upgrades, but its port will change as a result of the upgrade. If this is
not the desired behavior, then you can choose to set the {{ambari.upgrade.hive.rolling}} property
to {{false}} in {{hive-site}} before continuing with this upgrade. When set to {{false}},
Hive's port will not change during the upgrade, but Hive will incur downtime while it is restarted
during the upgrade.
> - The Hive upgrade scripts will change to look for {{ambari.upgrade.hive.rolling}} and
will choose to do a {{stop}} and a {{start}} instead of a {{deregister}}
> - The XML upgrade packs will be changed to look for {{ambari.upgrade.hive.rolling}} and
only change the hive port based on this property being {{true}}. 



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