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https://issues.apache.org/jira/browse/AMBARI-20736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nate Cole updated AMBARI-20736:
-------------------------------
Status: Patch Available (was: Open)
> Allow Potentially Long Running Restart Commands To Have Their Own Timeout
> -------------------------------------------------------------------------
>
> Key: AMBARI-20736
> URL: https://issues.apache.org/jira/browse/AMBARI-20736
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Reporter: Nate Cole
> Assignee: Nate Cole
> Priority: Critical
> Fix For: 2.5.1
>
> Attachments: AMBARI-20736.patch
>
>
> During an upgrade of a cluster, some commands are expected to take a very
> long time depending on what the size of the cluster is and how much data is
> stored. For example, a NameNode restart with SafeMode exit may take in excess
> of 30 minutes. On some clusters, this could take less than 1 minute.
> Currently today, the only way to adjust these properties is to do so across
> the board for all commands by editing {{ambari.properties}} and setting
> {{agent.task.timeout}}. This solution doesn't work very well since the
> majority of restarts during an upgrade are not on a master component.
> There needs to be a way to instruct Ambari that a restart should be allowed
> to run for a relatively long period of time.
> - Both Java and Python need to be considered here. We don't want Python to
> give up and return a {{FAILED}} state and we don't want Ambari server to set
> the task to {{TIMEDOUT}}.
> - This can be useful in both normal restarts and upgrade scenarios.
> h3. Upgrade Only
> If considering this functionality in the context of an upgrade only, then it
> is conceivable that this logic can be placed inside of the upgrade XML packs:
> {code}
> <service name="HDFS">
> <component name="NAMENODE">
> <upgrade>
> <task xsi:type="restart-task" timeout="1800"/>
> </upgrade>
> {code}
> - This would allow future mpacks to be able to control the restart of
> components. Perhaps this can even be slightly abstracted out:
> {code}
> <service name="HDFS">
> <component name="NAMENODE">
> <upgrade>
> <task xsi:type="restart-task"
> timeout="upgrade.parameter.master.restart.long"/>
> </upgrade>
> upgrade.parameter.slave.restart.short = 300
> upgrade.parameter.slave.restart.long = 900
> upgrade.parameter.master.restart.short = 1500
> upgrade.parameter.master.restart.long = 1800
> {code}
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