Vihang Karajgaonkar has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/12118 )

Change subject: IMPALA-7970 : Add support for metastore event based automatic 
invalidate
......................................................................


Patch Set 20:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12118/19/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java
File 
fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java:

http://gerrit.cloudera.org:8080/#/c/12118/19/fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java@269
PS19, Line 269:     }
> I think fetching the event ID here can lead to a race where we miss a notif
Thanks for catching this. Fixed it the latest patch set. Although as discussed, 
there is still going to be small window of time where some of the events will 
be reprocessed. I have added a comment in CatalogServiceCatalog giving details 
about that case.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic70b27780560b7ac9b33418d132b36cd0ca4abf7
Gerrit-Change-Number: 12118
Gerrit-PatchSet: 20
Gerrit-Owner: Vihang Karajgaonkar <vih...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Paul Rogers <prog...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com>
Gerrit-Comment-Date: Fri, 18 Jan 2019 00:17:16 +0000
Gerrit-HasComments: Yes

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