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https://issues.apache.org/jira/browse/DRILL-5005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960391#comment-15960391
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Khurram Faraaz commented on DRILL-5005:
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[~paul-rogers] can you please point me to some existing queries that use
EXTERNAL_SORT. I will execute, and verify that the memory is listed correct,
for such queries.
> Potential issues with external sort info in query profile
> ---------------------------------------------------------
>
> Key: DRILL-5005
> URL: https://issues.apache.org/jira/browse/DRILL-5005
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.9.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Minor
> Fix For: 1.11.0
>
>
> Run a query that will include an external sort.
> Look at the visualized plan. The external sort is shown in the tree as just
> "Sort". Suggestion: say "External Sort".
> In the operator profiles section, memory use for EXTERNAL_SORT is listed as
> 26MB. Yet the file being sorted is 388 MB. Even allowing for projects of a
> subset of column, 26 MB seems awfully small to hold the data set.
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