> On May 15, 2017, 3:14 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
> > Lines 2513 (patched)
> > <https://reviews.apache.org/r/59274/diff/1/?file=1718346#file1718346line2513>
> >
> >     Will this automatically clear all the paths or we need to do it 
> > separately somehow?

What do you mean? I copied this small code from the method that clears all 
tables.


> On May 15, 2017, 3:14 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
> > Lines 328 (patched)
> > <https://reviews.apache.org/r/59274/diff/1/?file=1718347#file1718347line329>
> >
> >     note that getting eventId and getting events is done via to separate 
> > calls. New events may appear between these two calls, so it is very likely 
> > that the condition 
> >     
> >     response.getEvents().size() == expectedNotificationsSize)
> >     
> >     is false.

True. What about just checking if expected notifications is LESS instead? If we 
get less events, then something is wrong. If we get more events, then we're 
fine.


- Sergio


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On May 15, 2017, 2:58 p.m., Sergio Pena wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/59274/
> -----------------------------------------------------------
> 
> (Updated May 15, 2017, 2:58 p.m.)
> 
> 
> Review request for sentry, Alexander Kolbasov, kalyan kumar kalvagadda, and 
> Na Li.
> 
> 
> Bugs: SENTRY-1760
>     https://issues.apache.org/jira/browse/SENTRY-1760
> 
> 
> Repository: sentry
> 
> 
> Description
> -------
> 
> The patch will set the 'needHiveSnapshot' to TRUE whenever the following 
> cases are found:
> 
> - List of notifications received are different than expected. 
>   This may happen when Sentry has been down or HDFS sync was disabled for a 
> while (more than 24h), 
>   and the HMS cleared old notifications (older than 24h) not processed by 
> Sentry causing a gap when retrieving notifications.
>   
> - Latest Sentry notification ID processed is bigger than current HMS 
> notification ID.
>   This may happen when the HMS DB data was reset or restore from an old 
> snapshot causing sync issues with Sentry.
>   
> When needHiveSnapshot is set to TRUE, then the HMSFollower will CLEAR any 
> hive snapshot stored on the Sentry store, and recreate a
> new hive snapshot from scratch to keep Sentry in sync.
> 
> 
> Diffs
> -----
> 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
>  ef6786537e9c5f7730bc86d44e8b4a168c20677e 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
>  5e6b906587f6422d9bf1466ab83815722bd51fb0 
> 
> 
> Diff: https://reviews.apache.org/r/59274/diff/1/
> 
> 
> Testing
> -------
> 
> HadoopQA is GREEN.
> 
> 
> Thanks,
> 
> Sergio Pena
> 
>

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