Bharath Vissapragada has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/13058 )

Change subject: IMPALA-8430: Fix flakiness in testCreateDropCreateDatabase
......................................................................


Patch Set 1: Code-Review+1

(2 comments)

Vihang, can you take a quick look too?

http://gerrit.cloudera.org:8080/#/c/13058/1/fe/src/test/java/org/apache/impala/catalog/events/MetastoreEventsProcessorTest.java
File 
fe/src/test/java/org/apache/impala/catalog/events/MetastoreEventsProcessorTest.java:

http://gerrit.cloudera.org:8080/#/c/13058/1/fe/src/test/java/org/apache/impala/catalog/events/MetastoreEventsProcessorTest.java@278
PS1, Line 278:   // Adding sleep here to make sure that the CREATION_TIME is 
not same
             :     // as the previous CREATE_DB operation, so as to trigger the 
filtering logic
             :     // based on CREATION_TIME in DROP_DB event processing. This 
is currently a
             :     // limitation : the DROP_DB event filtering expects that 
while processing events,
             :     // the CREATION_TIME of two Databases with same name won't 
have the same
             :     // creation timestamp.
             :     sleep(2000);
> Yes, so the same applies to Hive as well. We don't want events to have same
Like we discussed offlines, this is probably not needed. Consider removing it.


http://gerrit.cloudera.org:8080/#/c/13058/1/fe/src/test/java/org/apache/impala/catalog/events/MetastoreEventsProcessorTest.java@709
PS1, Line 709: This is currently a
             :     // limitation : the DROP_TABLE event filtering expects that 
while processing events,
             :     // the CREATION_TIME of two tables with same name won't have 
the same
             :     // creation timestamp.
> It is expected to rely on the ctime, but limitation is that we don't expect
Not totally understand but looks like you are talking about the precision of 
the underlying timestamp and it being rounded off to a nearest second. If so, 
clarify that?



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I30bf4535d54c9cd8d257b528dc7a1b42f106800d
Gerrit-Change-Number: 13058
Gerrit-PatchSet: 1
Gerrit-Owner: Bharath Krishna <bhar...@cloudera.com>
Gerrit-Reviewer: Anurag Mantripragada <anu...@cloudera.com>
Gerrit-Reviewer: Bharath Krishna <bhar...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Fredy Wijaya <fwij...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com>
Gerrit-Comment-Date: Wed, 17 Apr 2019 21:09:13 +0000
Gerrit-HasComments: Yes

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