Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/14846 )

Change subject: IMPALA-9195: Using multithreaded execution to accelerate 'show 
tables/databases'
......................................................................


Patch Set 14:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/14846/11/fe/src/main/java/org/apache/impala/service/Frontend.java
File fe/src/main/java/org/apache/impala/service/Frontend.java:

http://gerrit.cloudera.org:8080/#/c/14846/11/fe/src/main/java/org/apache/impala/service/Frontend.java@857
PS11, Line 857:         LOG.error("Encountered an error checking access", e);
> Continuing the loop when it comes into an exception can help get all the ex
I think they are probably the same kind of exception so don't need to log them 
all. Most importantly, before this patch, we stop when the first exception is 
thrown. After this patch, we have to iterate all the candidates and wait until 
they all fail, which could take time if the exception is some sort of 
connection timeout errors. I think we should act as the current behavior. 
Thoughts?



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I860e0d18afa0421665f8b3b1c5561d6bdacc5e96
Gerrit-Change-Number: 14846
Gerrit-PatchSet: 14
Gerrit-Owner: Zhou Xu <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Vihang Karajgaonkar <[email protected]>
Gerrit-Reviewer: Zhou Xu <[email protected]>
Gerrit-Comment-Date: Wed, 25 Dec 2019 13:30:11 +0000
Gerrit-HasComments: Yes

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