[jira] [Created] (NIFI-3665) Documentation doesn't cover handling of local state directory in upgrade scenarios

["Aldrin Piri (JIRA)" <ji...@apache.org>]

Aldrin Piri created NIFI-3665:
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             Summary: Documentation doesn't cover handling of local state directory in upgrade scenarios
                 Key: NIFI-3665
                 URL: https://issues.apache.org/jira/browse/NIFI-3665
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Documentation & Website
            Reporter: Aldrin Piri
            Priority: Minor


We had a user that was running a standalone instance of NiFi and was unsure of what to do with the state directory.  

{quote}
I just wanted to confirm something, but I couldn't find anything online.

A lot of docs that talk about setting NiFi up from a System Admin's point-of-view, mention changing config to move several folders out of the NiFi root dir. These typically include all 4 repositories, as well as files like the flow.xml.gz.

I see most guide leave the 'work' dir in place, so I assume when a new version comes out, nothing is lost if 'work' is deleted.

However, I'm not sure about the 'state' dir. Should this exist outside of the root dir, if the idea is to replace NiFi's root dir with a new version, or does it also get re-built like 'work'? Does it make a difference when running single node vs (master-less) cluster?

Thanks for any advice in advance,
--Wes
{quote}

We don't seem to capture the idea of externalizing this to make upgrades easier in our Administrator's guide (https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#state_providers) nor in the Upgrade guide in our Wiki (https://cwiki.apache.org/confluence/display/NIFI/Upgrading+NiFi)



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