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https://issues.apache.org/jira/browse/DRILL-3543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15022857#comment-15022857
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Deneche A. Hakim commented on DRILL-3543:
-----------------------------------------
I will adding the following metrics to ExternalSortRecordBatch:
| SPILL_COUNT| number of times operator spilled to disk |
| PEAK_SIZE_IN_MEMORY | peak value for totalSizeInMemory (1) |
| PEAK_BATCHES_IN_MEMORY | maximum number of batches kept in memory |
(1) how much memory sort estimated it's using so far. See DRILL-4121 for a case
where this won't be enough
> Add stats for external sort to a query profile
> ----------------------------------------------
>
> Key: DRILL-3543
> URL: https://issues.apache.org/jira/browse/DRILL-3543
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Relational Operators
> Affects Versions: 1.1.0
> Reporter: Victoria Markman
> Assignee: Deneche A. Hakim
> Priority: Critical
> Labels: usability
> Fix For: Future
>
>
> The only indication if sort spilled to disk today is info from the
> drillbit.log.
> It would be great if this information was displayed in the query profile.
> {code}
> 015-07-22 23:47:29,907 [2a4fd46e-f8c3-6b96-b165-b665a41be311:frag:0:0] INFO
> o.a.d.e.p.i.xsort.ExternalSortBatch - Completed spilling to
> /tmp/drill/spill/2a4fd46e-f8c3-6b96-b165-b665a41be311/major_fragment_0/minor_fragment_0/operator_7/92
> 2015-07-22 23:47:29,919 [2a4fd46e-f8c3-6b96-b165-b665a41be311:frag:0:0] INFO
> o.a.d.e.p.i.xsort.ExternalSortBatch - Merging and spilling to
> /tmp/drill/spill/2a4fd46e-f8c3-6b96-b165-b665a41be311/major_fragment_0/minor_fragment_0/operator_7/93
> 2015-07-22 23:47:29,919 [2a4fd46e-f8c3-6b96-b165-b665a41be311:frag:0:0] INFO
> o.a.d.e.p.i.xsort.ExternalSortBatch - Completed spilling to
> /tmp/drill/spill/2a4fd46e-f8c3-6b96-b165-b665a41be311/major_fragment_0/minor_fragment_0/operator_7/93
> 2015-07-22 23:47:29,919 [2a4fd46e-f8c3-6b96-b165-b665a41be311:frag:0:0] WARN
> o.a.d.e.p.i.xsort.ExternalSortBatch - Starting to merge. 7 batch groups.
> Current allocated memory: 11566787
> {code}
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