Dan Hecht has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/9371 )

Change subject: IMPALA-6549: Enable file handle cache by default
......................................................................


Patch Set 1:

(1 comment)

> (1 comment)
 >
 > > (1 comment)
 > >
 > > Do you have a list of tests you plan to run?
 >
 > I ran core tests with no issues. This will get incorporated into
 > the next run of performance tests. Separately, I plan to do a
 > warmup test where I run with a table with a large number of files
 > with a cold cache.
 >

And the goal of the warmup test be to determine whether IMPALA-6364 is a 
problem in the cache miss case, is that right?

http://gerrit.cloudera.org:8080/#/c/9371/1/be/src/runtime/io/disk-io-mgr.cc
File be/src/runtime/io/disk-io-mgr.cc:

http://gerrit.cloudera.org:8080/#/c/9371/1/be/src/runtime/io/disk-io-mgr.cc@109
PS1, Line 109: 21600
> This is a good point. The concern for aging out file handles was about disk
Maybe incorporate some of that context into the comment?



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I6935825a1c4c7b2da0bb877f732027be1a57a8b7
Gerrit-Change-Number: 9371
Gerrit-PatchSet: 1
Gerrit-Owner: Joe McDonnell <joemcdonn...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com>
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Comment-Date: Thu, 22 Feb 2018 00:12:10 +0000
Gerrit-HasComments: Yes

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