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https://issues.apache.org/jira/browse/TINKERPOP-1992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16774419#comment-16774419
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ASF GitHub Bot commented on TINKERPOP-1992:
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spmallette commented on pull request #1069: TINKERPOP-1992 count has negative
time in profile
URL: https://github.com/apache/tinkerpop/pull/1069
https://issues.apache.org/jira/browse/TINKERPOP-1992
Not sure if this the best way to do this but basically introduced an
interface called `ProfilingAware` that makes it so that `ProfileStrategy` can
notify that step that "profiling" is happening so that the step has a chance to
get its life in order. For this particular problem, that meant that `group()`
needed to reset its reducing barrier step (if present) for its value traversal
(i.e. second `by()` modulator) so that it could internally start the profile
timer (which doesn't happen otherwise.
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> count has negative time in profile
> ----------------------------------
>
> Key: TINKERPOP-1992
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1992
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.3.3, 3.2.9
> Reporter: Robert Dale
> Priority: Minor
>
> {noformat}
> gremlin> g.V().group().by().by(bothE().count()).profile()
> ==>Traversal Metrics
> Step Count
> Traversers Time (ms) % Dur
> =============================================================================================================
> TinkerGraphStep(vertex,[]) 19172
> 19172 4.957 5.24
> GroupStep(identity,[VertexStep(BOTH,edge), Prof... 1
> 1 89.696 94.76
> VertexStep(BOTH,edge) 84812
> 84812 50.723
> CountGlobalStep 19172
> 19172 -39.649
> >TOTAL -
> - 94.654 -
> {noformat}
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