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https://issues.apache.org/jira/browse/NIFI-1547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Burgess resolved NIFI-1547.
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Resolution: Fixed
> DistributedMapCacheServer: Ambiguous error on misconfiguration
> --------------------------------------------------------------
>
> Key: NIFI-1547
> URL: https://issues.apache.org/jira/browse/NIFI-1547
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Brandon DeVries
> Assignee: Mark Owens
> Priority: Minor
> Fix For: 1.5.0
>
>
> If a DistributedMapCacheServer's "Persistence Directory" is set to the same
> location as another DistributedMapCacheServer (or another controller service
> with a "Persistence Directory") only one will enable successfully. The
> other(s) will get an OverlappingFileLockException. Consider catching this
> exception \[1\] and providing additional information (e.g. check the lock
> location / "Persistence Directory").
> \[1\]
> https://github.com/apache/nifi/blob/31fba6b3332978ca2f6a1d693f6053d719fb9daa/nifi-nar-bundles/nifi-standard-services/nifi-distributed-cache-services-bundle/nifi-distributed-cache-server/src/main/java/org/apache/nifi/distributed/cache/server/map/PersistentMapCache.java#L44
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