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From "Tim Armstrong (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-2831: Bound the number of scanner threads per scan node.
Date Tue, 30 Aug 2016 23:06:40 GMT
Tim Armstrong has posted comments on this change.

Change subject: IMPALA-2831: Bound the number of scanner threads per scan node.
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/4174/1/be/src/exec/hdfs-scan-node.cc
File be/src/exec/hdfs-scan-node.cc:

Line 740:     runtime_state_->resource_pool()->set_max_quota(CpuInfo::num_cores() +
1);
> Doesn't this number also include async join build threads?
Nm, you are already doing that. It seems weird that the scanner threads quota is set at the
fragment level. I think either both should have the + 1 or neither. It's weird that this has
the same effect as setting num_scanner_threads=(num_cores() + 1)


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Gerrit-MessageType: comment
Gerrit-Change-Id: I191988ad18d6b4caf892fc967258823edcf9681f
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Michael Ho <kwho@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-HasComments: Yes

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