Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/9757 )

Change subject: IMPALA-6679,IMPALA-6678: reduce scan reservation
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Patch Set 9:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/9757/9/be/src/exec/hdfs-scan-node.cc
File be/src/exec/hdfs-scan-node.cc:

http://gerrit.cloudera.org:8080/#/c/9757/9/be/src/exec/hdfs-scan-node.cc@286
PS9, Line 286:       DCHECK(!first_thread);
> I actually don't understand how this ever worked - we can bail out here if
Filed IMPALA-6920. From what I can tell it can't result in any deadlocks or 
crashes prior to this DCHECK but it's not clear if it's desirable behaviour.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ifc80e05118a9eef72cac8e2308418122e3ee0842
Gerrit-Change-Number: 9757
Gerrit-PatchSet: 9
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet....@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Comment-Date: Tue, 24 Apr 2018 22:02:04 +0000
Gerrit-HasComments: Yes

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