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https://issues.apache.org/jira/browse/RANGER-3903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramachandran updated RANGER-3903:
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Attachment: image-2022-12-10-13-45-27-181.png
> Improvement in RangerPolicyDeltaUtil--> applyDeltas method
> ----------------------------------------------------------
>
> Key: RANGER-3903
> URL: https://issues.apache.org/jira/browse/RANGER-3903
> Project: Ranger
> Issue Type: Improvement
> Components: Ranger
> Affects Versions: 3.0.0
> Reporter: Ramachandran
> Assignee: Ramachandran
> Priority: Major
> Attachments:
> 0001-RANGER-3903-Bug-in-RangerPolicyDeltaUtil-applyDeltas.patch,
> image-2022-11-08-09-22-05-188.png, image-2022-12-10-13-45-27-181.png,
> screenshot-1.png
>
>
> After going through the below code snippets in the master branch
> !screenshot-1.png!
> From the above code, we iterate delta policies and check if this policy
> exists in the existing policy, we add that to deletePolicies list.
> 1st#Improvement:
> If a delta change type is created, we expect that it should be in the
> deletedPolicies list which will not happen.
> So we need to add changeType == RangerPolicyDelta.CHANGE_TYPE_POLICY_CREATE
> as part of the below block of code
> !image-2022-11-08-09-22-05-188.png!
> 2nd#Improvement:
> problem:
> !image-2022-12-10-13-43-48-528.png!
> From the above code,we see for each element in the deltas ,we iterate
> policies and check if this delta policy exists in the existing policy, we add
> that to deletePolicies list.
> Solution:
> We need to use Map instead of iterating policies for every element of deltas
> --> Map<Long,List<RangerPolicy>> policiesIdMap
> Building index map key will be policyId and value will be no of policies
> associated with the same policy Id
>
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