> On July 12, 2017, 7:01 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
> > Lines 84 (patched)
> > <https://reviews.apache.org/r/59508/diff/9/?file=1774882#file1774882line84>
> >
> >     Is it an attempt to fix the problem with missing server name? Are you 
> > sure that this will have the setting?
> >     
> >     If you still use, please introduce a new variable rather then reusing 
> > the parameter.
> 
> kalyan kumar kalvagadda wrote:
>     No it is not. lina is looking into it.

I am assuming you revert to using Sentry config for this.


> On July 12, 2017, 7:01 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
> > Lines 105 (patched)
> > <https://reviews.apache.org/r/59508/diff/9/?file=1774882#file1774882line105>
> >
> >     It would be good to set client to null as well to allow multiple calls 
> > to close()
> 
> kalyan kumar kalvagadda wrote:
>     I don't see a reason to destoy SentryHmsClient. It is constructed when 
> HMSFollower is constructed and stays. Based on situation close/connect are 
> called on it.

I see how it works now. Dropping the issue.


> On July 12, 2017, 7:01 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
> > Lines 124 (patched)
> > <https://reviews.apache.org/r/59508/diff/9/?file=1774882#file1774882line124>
> >
> >     This doesn't look right. Once we become a leader, who will re-open the 
> > client?
> 
> kalyan kumar kalvagadda wrote:
>     On becoming leader, SentryHmsClient would open new connection using 
> hiveConnectionFactory.

I see. I was confused because usually once you call close() you are not 
supposed to use an object. May be it is better to have a different method for 
client for this purpose.


> On July 12, 2017, 7:01 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
> > Lines 200 (patched)
> > <https://reviews.apache.org/r/59508/diff/9/?file=1774882#file1774882line200>
> >
> >     Why are we doing this - why not let the caller to log the failure? This 
> > will allow us to remove the whole try-block
> 
> kalyan kumar kalvagadda wrote:
>     if the caller is not doing anything specific to that excpetion we need 
> not have handlers for those specific exceptions just to log the failure. 
>     
>     With the approach i have taken, caller doesn't have any spefic handlers 
> for these exception and all of then are handled with one block.

But the caller logs the exception anyway. Here you are not adding any extra 
value - just loggin an exception and passing it on.


> On July 12, 2017, 7:01 p.m., Alexander Kolbasov wrote:
> > sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
> > Lines 232 (patched)
> > <https://reviews.apache.org/r/59508/diff/9/?file=1774882#file1774882line232>
> >
> >     this is not needed since it is initialized to false initially
> 
> kalyan kumar kalvagadda wrote:
>     we need it as the isNotificationProcessed can be set to true in the loop.
>     let's say a case where notification-1 is processed. 
> isNotificationProcessed will be set to true.
>     notification-2 is not processed becuase of an exception we need to 
> explicitly set the isNotificationProcessed to false.

Looks like it should be set to false on each iteration?


- Alexander


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On July 12, 2017, 5:44 p.m., kalyan kumar kalvagadda wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/59508/
> -----------------------------------------------------------
> 
> (Updated July 12, 2017, 5:44 p.m.)
> 
> 
> Review request for sentry, Alexander Kolbasov, Brian Towles, Hao Hao, Na Li, 
> Sergio Pena, Vamsee Yarlagadda, and Vadim Spector.
> 
> 
> Bugs: SENTRY-1769
>     https://issues.apache.org/jira/browse/SENTRY-1769
> 
> 
> Repository: sentry
> 
> 
> Description
> -------
> 
> Things included in refactoring.
> 1. Moved the complete notification processing logic to notificationProcessor.
> 2. Added new class HMSFollowerHelper class which does
>      HMS Client creation
>      HMS Client closure
>      Creating and persisting the HMS snapshot
> 3. Misc cleanup
> 
> 
> Diffs
> -----
> 
>   
> sentry-hdfs/sentry-hdfs-service/src/main/java/org/apache/sentry/hdfs/PathImageRetriever.java
>  2426b40 
>   
> sentry-hdfs/sentry-hdfs-service/src/main/java/org/apache/sentry/hdfs/SentryPlugin.java
>  d6100de 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/SentryPolicyStorePlugin.java
>  5b8a572 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/model/MAuthzPathsSnapshotId.java
>  d683c2c 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/model/MSentryHmsNotification.java
>  0d54548 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/PathsImage.java
>  4d852e6 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/persistent/SentryStore.java
>  350c922 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/provider/db/service/thrift/SentryPolicyStoreProcessor.java
>  ad23334 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java
>  2d581f7 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HmsFollower.java
>  PRE-CREATION 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/NotificationProcessor.java
>  6762de7 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/SentryHmsClient.java
>  PRE-CREATION 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/SentryService.java
>  322197b 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/SentryServiceUtil.java
>  9c3e485 
>   
> sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/ServiceConstants.java
>  193c611 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/provider/db/service/persistent/TestSentryStore.java
>  395cba6 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/service/thrift/TestHMSFollower.java
>  66ad2a1 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/service/thrift/TestHmsFollower.java
>  PRE-CREATION 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/service/thrift/TestNotificationProcessor.java
>  PRE-CREATION 
>   
> sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/service/thrift/TestSentryHmsClient.java
>  PRE-CREATION 
>   
> sentry-tests/sentry-tests-hive/src/test/java/org/apache/sentry/tests/e2e/dbprovider/TestDbPrivilegeCleanupOnDrop.java
>  b9330cc 
> 
> 
> Diff: https://reviews.apache.org/r/59508/diff/9/
> 
> 
> Testing
> -------
> 
> Made sure that all the tests around HMSFollower and SentryStore passed. Added 
> new classes to test new classes added.
> 
> 
> Thanks,
> 
> kalyan kumar kalvagadda
> 
>

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