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https://issues.apache.org/jira/browse/DRILL-5872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16202818#comment-16202818
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ASF GitHub Bot commented on DRILL-5872:
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GitHub user paul-rogers opened a pull request:
https://github.com/apache/drill/pull/990
DRILL-5872: Workaround for invalid cost in physical plans
See DRILL-5872 for details.
Works around a bug in a storage plugin that produces NaN for a cost
estimate, which then leads to profiles that can't be deserialized. This fix
simply replaces the NaN in the profile with the maximum double value.
The real fix is that the storage plugin concerned should not produce NaN
estimates.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/paul-rogers/drill DRILL-5872
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/990.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #990
----
commit 416bc527c4528d93ea23169292bd42578a4c647a
Author: Paul Rogers <[email protected]>
Date: 2017-10-12T22:27:31Z
DRILL-5872: Workaround for invalid cost in physical plans
See DRILL-5872 for details.
----
> Deserialization of profile JSON fails due to totalCost being reported as "NaN"
> ------------------------------------------------------------------------------
>
> Key: DRILL-5872
> URL: https://issues.apache.org/jira/browse/DRILL-5872
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.12.0
> Reporter: Kunal Khatua
> Assignee: Paul Rogers
> Priority: Blocker
> Fix For: 1.12.0
>
>
> With DRILL-5716 , there is a change in the protobuf that introduces a new
> attribute in the JSON document that Drill uses to interpret and render the
> profile's details.
> The totalCost attribute, used as a part of showing the query cost (to
> understand how it was assign to small/large queue), sometimes returns a
> non-numeric text value {{"NaN"}}.
> This breaks the UI with the messages:
> {code}
> Failed to get profiles:
> unable to deserialize value at key 2620698f-295e-f8d3-3ab7-01792b0f2669
> {code}
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