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Fix it, then Ship it!





agents-common/src/main/java/org/apache/ranger/plugin/resourcematcher/RangerPathResourceMatcher.java
Line 159 (original), 159 (patched)
<https://reviews.apache.org/r/74124/#comment313488>

    It will help to avoid creation of wildcardPathElements in every call to 
isRecursiveWildCardMatch().
    
    Consider creating & caching wildcardPathElements in 
RecursiveWildcardResourceMatcher constructor and send this to 
isRecursiveWildCardMatch() as an argument - similar to wildcardPath.
    
    Note that such caching should be done only when wildcardPath doesn't have 
any macros/tokens - like {USER}, ${{USER.dept}}). When wildcardPath does have 
such macros/tokens, wildcardPathElements can be created in 
RecursiveWildcardResourceMatcher.isMatch(), instead of the constructor.


- Madhan Neethiraj


On Sept. 19, 2022, 1:40 a.m., Abhay Kulkarni wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/74124/
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> 
> (Updated Sept. 19, 2022, 1:40 a.m.)
> 
> 
> Review request for ranger, Madhan Neethiraj, Ramesh Mani, Sailaja Polavarapu, 
> and Velmurugan Periasamy.
> 
> 
> Bugs: RANGER-3913
>     https://issues.apache.org/jira/browse/RANGER-3913
> 
> 
> Repository: ranger
> 
> 
> Description
> -------
> 
> When evaluating resource matching for a path-type resource in a recursive 
> policy containing wildcards, several calls may be made to Hadoop library 
> function FilenameUtils.wildcardMatch(). These calls may be expensive and 
> minimizing such calls may help improve policy evaluation performance.
> 
> 
> Diffs
> -----
> 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/resourcematcher/RangerPathResourceMatcher.java
>  a95b1f73f 
> 
> 
> Diff: https://reviews.apache.org/r/74124/diff/1/
> 
> 
> Testing
> -------
> 
> Compiled clean, ran all unit tests successfully.
> 
> 
> Thanks,
> 
> Abhay Kulkarni
> 
>

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