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https://issues.apache.org/jira/browse/STORM-565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14219590#comment-14219590
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ASF GitHub Bot commented on STORM-565:
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Github user d2r commented on the pull request:
https://github.com/apache/storm/pull/323#issuecomment-63842480
+1
> Setting topology.groups to nil could break SimpleACLAuthorizer
> --------------------------------------------------------------
>
> Key: STORM-565
> URL: https://issues.apache.org/jira/browse/STORM-565
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 0.9.3-rc2
> Reporter: Derek Dagit
> Assignee: Sriharsha Chintalapani
> Priority: Minor
> Labels: security
>
> https://github.com/apache/storm/blob/f8bce2225f2cfc550dcc67dff469f87062686506/storm-core/src/jvm/backtype/storm/security/auth/authorizer/SimpleACLAuthorizer.java#L114
> If a user would happen to include this config, but set its value to nil, then
> we could see an NPE here.
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