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sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
Lines 2618 (patched)
<https://reviews.apache.org/r/59720/#comment250248>

    do you want to delete all entries whose authzImgID <= imageID? 
    
    This may handle the case better where two threads are saving full images at 
the same time.


- Na Li


On June 1, 2017, 10:22 p.m., Sergio Pena wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/59720/
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> 
> (Updated June 1, 2017, 10:22 p.m.)
> 
> 
> Review request for sentry and Alexander Kolbasov.
> 
> 
> Bugs: SENTRY-1781
>     https://issues.apache.org/jira/browse/SENTRY-1781
> 
> 
> Repository: sentry
> 
> 
> Description
> -------
> 
> This patch only adds an extra column to the MAuthzPathsMapping table that 
> contains an image identifier that will be used to detect full snapshots. This 
> patch does not increment the identifier yet, it only uses 0 for now.
> 
> TIPS for reviewers:
> 
> - package.jdo adds a new column name AUTHZ_IMG_ID to the AUTHZ_MAPS_MAPPING 
> table used to identify the paths that are part of a new hive snapshot.
> 
> - MAuthzPathsMapping.java adds the the new column and API to handle JDO 
> requests.
> 
> - SentryStore.java modifies all methods that interact with the snapshots. It 
> makes sure that
>   when persisting a new snapshot, then the authzImgID is incremented and the 
> old one is
>   deleted. Also it makes sure that retrieve/add/delete/rename/update uses the 
> current 
>   authzImgID whenver they're called.
> 
> - TestSentryStore.java adds unit tests to verify that all SentryStore API 
> work correctly
>   when a new hive snapshot is created.
> 
> 
> Diffs
> -----
> 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/model/MAuthzPathsMapping.java
>  f51894bb7e109c37997e7134e07a82f46c0a3c44 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/model/package.jdo
>  96ab462d22afaf0f3004926f2855a8bb8cabc53b 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
>  cb05a84cb88151156893f0f9d1885bd83cbc2abb 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
>  c5dddfb07bdfcb4c2bfee51f5cd7c684eff65a80 
> 
> 
> Diff: https://reviews.apache.org/r/59720/diff/2/
> 
> 
> Testing
> -------
> 
> All unit tests run locally, but there are some flaky tests on Jenkins no 
> related to this patch.
> 
> 
> Thanks,
> 
> Sergio Pena
> 
>

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