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https://issues.apache.org/jira/browse/TINKERPOP-1682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408588#comment-16408588
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ASF GitHub Bot commented on TINKERPOP-1682:
-------------------------------------------
Github user dkuppitz commented on a diff in the pull request:
https://github.com/apache/tinkerpop/pull/621#discussion_r176239480
--- Diff: CHANGELOG.asciidoc ---
@@ -110,7 +112,6 @@ This release also includes changes from
<<release-3-2-6, 3.2.6>>.
* Removed access to previously deprecated `CoreGremlinPlugin#INSTANCE`
field.
* `gremlin.sh` and `gremln.bat` no longer support the option to pass a
script as an argument for execution mode without using the `-i` option.
* Graphite and Ganglia are no longer packaged with the Gremlin Server
distribution.
-* `TransactionException` is no longer a class of `AbstractTransaction` and
it extends `RuntimeException`.
--- End diff --
That was unintentional, not show how/why/when that happened. I will add it
back.
> by-modulator optimization strategy
> ----------------------------------
>
> Key: TINKERPOP-1682
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1682
> Project: TinkerPop
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.2.4
> Reporter: Daniel Kuppitz
> Assignee: Daniel Kuppitz
> Priority: Major
>
> The can be a significant difference in performance depending on whether you
> use {{by(id)}} or {{by(id())}}:
> {noformat}
> gremlin> g.V().out().in().path().by(id()).profile()
> ==>Traversal Metrics
> Step Count
> Traversers Time (ms) % Dur
> =============================================================================================================
> TinkerGraphStep(vertex,[]) 6
> 6 12.137 58.03
> VertexStep(OUT,vertex) 6
> 6 1.345 6.43
> VertexStep(IN,vertex) 12
> 12 0.861 4.12
> PathStep([[IdStep, ProfileStep]]) 12
> 12 6.570 31.42
> IdStep 36
> 36 0.452
> >TOTAL -
> - 20.916 -
> gremlin> g.V().out().in().path().by(id).profile()
> ==>Traversal Metrics
> Step Count
> Traversers Time (ms) % Dur
> =============================================================================================================
> TinkerGraphStep(vertex,[]) 6
> 6 0.876 11.54
> VertexStep(OUT,vertex) 6
> 6 0.714 9.40
> VertexStep(IN,vertex) 12
> 12 3.299 43.43
> PathStep([id]) 12
> 12 2.706 35.63
> >TOTAL -
> - 7.596 -
> {noformat}
> We should have a strategy that rewrites these simple patterns. This affects
> {{id()}}, {{label()}}, {{key()}}, {{value()}}, but also
> {{by(values("name"))}}, which can be rewritten as {{by("name")}}
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