Philip Zeyliger has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8546 )

Change subject: IMPALA-5624: ProcessStateInfo::ReadProcFileDescriptorInfo() 
should not fork a process
......................................................................


Patch Set 2:

Based on my reading of "man readdir", it's not threadsafe. I think the only 
usage here is if a user hits "http://impalad:.../"; to see the web UI. It's 
possible that there's a lock somewhere preventing concurrent use, but given 
that this is already reasonably expensive, I'd recommend using the reentrant 
readdir_r instead.

I looked around, and it looks like C++17 and boost have filesystem 
abstractions, but I think readdir() is simple enough.


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ibffae8069a62e100abbfa7d558b49040b095ddc0
Gerrit-Change-Number: 8546
Gerrit-PatchSet: 2
Gerrit-Owner: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Lars Volker <[email protected]>
Gerrit-Reviewer: Philip Zeyliger <[email protected]>
Gerrit-Comment-Date: Tue, 14 Nov 2017 19:09:00 +0000
Gerrit-HasComments: No

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