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https://issues.apache.org/jira/browse/RANGER-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17878017#comment-17878017
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wangzhongwei commented on RANGER-4923:
--------------------------------------
review board:https://reviews.apache.org/r/75195/
> optimize the issue where the policy writing process takes too long and causes
> incorrect permissions
> ---------------------------------------------------------------------------------------------------
>
> Key: RANGER-4923
> URL: https://issues.apache.org/jira/browse/RANGER-4923
> Project: Ranger
> Issue Type: Improvement
> Components: plugins
> Affects Versions: 2.4.0, 2.5.0
> Reporter: wangzhongwei
> Assignee: wangzhongwei
> Priority: Major
> Attachments: RANGER-4923-0001.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When the number of policies is very large, such as exceeding 100000, the
> policy file may grow larger than 100MB. In this case, the plugin may take
> several seconds or even longer to write the policies to the cache file using
> FileWriter. During this process, from clearing to writing the policy file,
> there may be issues with insufficient permissions. To resolve this issue, we
> can write the policy to a temporary file first and then use an atomic MV
> (which can be configured as a parameter) to handle the situation.
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