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agents-common/src/main/java/org/apache/ranger/plugin/contextenricher/RangerAdminTagRetriever.java
Lines 37 (patched)
<https://reviews.apache.org/r/74175/#comment313639>

    Is there a rough estimate of how much de-duping of tags save on the plugin 
(and admin) side?



agents-common/src/main/java/org/apache/ranger/plugin/util/RangerCommonConstants.java
Line 53 (original), 53 (patched)
<https://reviews.apache.org/r/74175/#comment313640>

    How is this constant used? There is another constant in 
RangerAdminTagRetriever which seems to control de-duping as well.



agents-common/src/main/java/org/apache/ranger/plugin/util/RangerServiceTagsDeltaUtil.java
Line 64 (original), 65 (patched)
<https://reviews.apache.org/r/74175/#comment313638>

    Please evaluate if this shallow copy can be done only in the Ranger admin 
process. In the plugin code, 1. making a copy may not be necessary, and 2. if 1 
is correct, then copying will incur excessive overhead. (It is assumed that the 
time taken to process service-tags in the plugin is much less than the tag 
download interval).



agents-common/src/main/java/org/apache/ranger/plugin/util/RangerServiceTagsDeltaUtil.java
Line 253 (original), 269 (patched)
<https://reviews.apache.org/r/74175/#comment313641>

    It may be useful to keep GUIDs of tag-definitions, tags and 
service-resources around. If the exported (or downloaded) serviceTags are to be 
used to import them into another (parallel - for DR use-case) system, then 
having same GUIDs of same objects is desirable.


- Abhay Kulkarni


On Oct. 17, 2022, 11:42 p.m., Madhan Neethiraj wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/74175/
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> 
> (Updated Oct. 17, 2022, 11:42 p.m.)
> 
> 
> Review request for ranger, Ankita Sinha, Kishor Gollapalliwar, Abhay 
> Kulkarni, Mehul Parikh, Pradeep Agrawal, Ramesh Mani, Sailaja Polavarapu, 
> Subhrat Chaudhary, and Velmurugan Periasamy.
> 
> 
> Bugs: RANGER-3951
>     https://issues.apache.org/jira/browse/RANGER-3951
> 
> 
> Repository: ranger
> 
> 
> Description
> -------
> 
> - skipped initialization of collection members (Map, List) with new 
> collection instance; these members will be set to null by default
> - skipped serializing empty collections, this helps to reduce size of JSON 
> downloaded to plugins
> - fixed potential concurrent modification to ServiceTags instance at Ranger 
> admin
> - updated tag-retriever to deDup tags, so that the plugins will have reduced 
> memory usage irrespective of the optimization at the server side
> - updated server to dedup tags by default i.e. default value for 
> configuration ranger.admin.supports.tags.dedup is changed from false to true
> 
> 
> Diffs
> -----
> 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/contextenricher/RangerAdminTagRetriever.java
>  1df5587cb 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/contextenricher/RangerTagForEval.java
>  1c634b393 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/model/RangerServiceResource.java
>  47d006048 
>   agents-common/src/main/java/org/apache/ranger/plugin/model/RangerTag.java 
> 9e620c32c 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/model/RangerTagDef.java 
> f1a83cfaf 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPolicyRepository.java
>  ff83c7434 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/util/RangerCommonConstants.java
>  86f881f80 
>   
> agents-common/src/main/java/org/apache/ranger/plugin/util/RangerServiceTagsDeltaUtil.java
>  0365fc992 
>   agents-common/src/main/java/org/apache/ranger/plugin/util/ServiceTags.java 
> b4f250038 
>   
> security-admin/src/main/java/org/apache/ranger/biz/RangerTagDBRetriever.java 
> c6b8ab937 
>   security-admin/src/main/java/org/apache/ranger/biz/TagDBStore.java 
> 4d3a56911 
>   
> security-admin/src/main/java/org/apache/ranger/common/RangerServiceTagsCache.java
>  576546f29 
>   
> security-admin/src/main/java/org/apache/ranger/patch/PatchForUpdatingTagsJson_J10020.java
>  301d5c30f 
>   
> security-admin/src/main/java/org/apache/ranger/rest/ServiceTagsProcessor.java 
> 1d6c48a4e 
> 
> 
> Diff: https://reviews.apache.org/r/74175/diff/1/
> 
> 
> Testing
> -------
> 
> - verified that all tests pass successfully
> - in an environment with 1m resources and ~3m tags, observed following 
> improvements:
>   -- 45% reduction in JSON file downloaded to plugins
>   -- 33% reduction in memory required for tags in plugins and Ranger admin
> 
> 
> Thanks,
> 
> Madhan Neethiraj
> 
>

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