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https://issues.apache.org/jira/browse/NIFI-15337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18066803#comment-18066803
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David Handermann commented on NIFI-15337:
-----------------------------------------
As a general practice, the Apache NiFi project does not backport changes,
except in rare cases for an incremental patch release version. The best
solution is to upgrade to NiFi 2.8.0, which includes a number of additional
fixes for other issues.
> ClearState Optional parameter is mandatory
> ------------------------------------------
>
> Key: NIFI-15337
> URL: https://issues.apache.org/jira/browse/NIFI-15337
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: László Dénes Terjéki
> Assignee: László Dénes Terjéki
> Priority: Major
> Fix For: 2.8.0, 2.7.2
>
> Attachments: replication.log
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> In NIFI-14900 the `\{id}/state/clear-requests` endpoint has a new optional
> parameter:
> {noformat}
> Optional component state to perform a selective key removal. If omitted,
> clears all state.{noformat}
> But if not set a NullPointerException is thrown during replication.
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