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https://issues.apache.org/jira/browse/NIFI-14392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17941035#comment-17941035
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Tamas Palfy commented on NIFI-14392:
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[~rubenvw] I was looking at possible solutions and came up with one that is
similar to yours. Although the one in your patch has some breaking errors that
needs to be fixed. I'm going to open PR soon and apply some of your ideas if
that's okay.
> Local state lost when migrating from 1.28 to 2.3
> ------------------------------------------------
>
> Key: NIFI-14392
> URL: https://issues.apache.org/jira/browse/NIFI-14392
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 2.0.0-M1, 2.0.0-M2, 2.0.0-M3, 2.0.0-M4, 2.0.0, 2.1.0,
> 2.2.0, 2.3.0
> Reporter: Ruben Van Wanzeele
> Assignee: Tamas Palfy
> Priority: Major
>
> We experienced an issue with the state during migration
> Our local state-management configuration looks as follows:
> {code:java}
> <local-provider>
> <id>local-provider</id>
>
> <class>org.apache.nifi.controller.state.providers.local.WriteAheadLocalStateProvider</class>
> <property name="Directory">./state/local</property>
> <property name="Always Sync">false</property>
> <property name="Partitions">16</property>
> <property name="Checkpoint Interval">2 mins</property>
> </local-provider> {code}
> And before migration we have our state details correctly in the expected
> directory:
> {code:java}
> ls -la ./state/local/
> total 92
> drwxrwsr-x. 18 nifi nifi 4096 Mar 26 10:25 .
> drwxrwsr-x. 8 root nifi 4096 Jan 17 02:14 ..
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-0
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-1
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-10
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-11
> ...
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-8
> drwxrwsr-x. 2 nifi nifi 4096 Mar 26 10:25 partition-9
> -rw-r--r--. 1 nifi nifi 20448 Mar 26 10:25 snapshot
> -rw-r--r--. 1 nifi nifi 0 Feb 19 21:28 wali.lock{code}
> On a new environment with the same state-management configuration I see that
> the state information is stored in ./state/local/journals directory:
> {code:java}
> ls -la ./state/local/
> total 16
> drwxrwsr-x 3 nifi nifi 4096 Mar 26 10:23 .
> drwxrwsr-x 9 root nifi 4096 Mar 24 12:27 ..
> -rw-r--r-- 1 nifi nifi 2443 Mar 26 10:23 checkpoint
> drwxrwsr-x 2 nifi nifi 4096 Mar 26 10:23 journals {code}
> On a migrated environment I find both directory structures, and {*}the state
> from before 2.3 is not maintained{*}.
> When searching the web, I found that this issue was already alerted, but not
> yet officially reported:
> https://lists.apache.org/thread/5v59hbp18rpsboqc2q6f79h3b64803om
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