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https://issues.apache.org/jira/browse/TINKERPOP-1822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372229#comment-16372229
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ASF GitHub Bot commented on TINKERPOP-1822:
-------------------------------------------
Github user krlohnes commented on the issue:
https://github.com/apache/tinkerpop/pull/715
@mpollmeier Sure thing! One thing that I've noticed is that currently,
`emit` doesn't emit in the order I'd expect for multiple children. e.g. for a
simple k-ary tree with 4 nodes, though it seems to work with a binary tree. The
following has `emit` vs `store` + `cap`. `cap` produces the order that I'd
expect from emit.
```
v0 = graph.addVertex().property("level", "0:0").vertex
v1_0 = graph.addVertex().property("level", "1:0").vertex
v1_1 = graph.addVertex().property("level", "1:1").vertex
v1_2 = graph.addVertex().property("level", "1:2").vertex
v1_3 = graph.addVertex().property("level", "1:3").vertex
v0.addEdge("child", v1_0, "num", 0)
v0.addEdge("child", v1_1, "num", 1)
v0.addEdge("child", v1_2, "num", 2)
v0.addEdge("child", v1_3, "num", 3)
gremlin> g.V().has("level",
"0:0").repeat(__.out("child").order().by(__.inE("child").values("num"))).emit()
==>v[2]
==>v[8]
==>v[6]
==>v[4]
gremlin> g.V().has("level",
"0:0").repeatDF(__.out("child").order().by(__.inE("child").values("num")).store("res")).cap("res")
==>[v[2],v[4],v[6],v[8]]
```
I'll look in to it when I have a few minutes, but I figured I'd update here
in case someone has a thought about it or I'm missing something obvious.
> Repeat should depth first search
> --------------------------------
>
> Key: TINKERPOP-1822
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1822
> Project: TinkerPop
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.3.0, 3.2.6
> Reporter: Robert Dale
> Priority: Major
>
> Perhaps optionally.
> See also:
> * https://groups.google.com/forum/#!topic/gremlin-users/gLSLxH_K-wE
> * https://github.com/apache/tinkerpop/pull/715
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