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https://issues.apache.org/jira/browse/TINKERPOP3-702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14721164#comment-14721164
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Ran Magen commented on TINKERPOP3-702:
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I've also tried implementing the RepeatStep with bulking capabilities
[here|https://github.com/rmagen/elastic-gremlin/blob/feature/bulk_queries_in_VertexStep/src/main/java/org/elasticgremlin/process/optimize/RepeatBulkStep.java].
It mostly works, and there's no need for ForceFeedStep, although a few tests
fail (probably has to do with the until/emit logic).
> Buffer input to inner traversals
> --------------------------------
>
> Key: TINKERPOP3-702
> URL: https://issues.apache.org/jira/browse/TINKERPOP3-702
> Project: TinkerPop 3
> Issue Type: Improvement
> Components: process
> Reporter: Ran Magen
> Assignee: Marko A. Rodriguez
> Fix For: 3.0.0-incubating
>
>
> In elastic-gremlin we implement an optimized VertexStep. Part of its job is
> to batch/buffer/bulk different traversers and query them together in-order to
> minizmize the number of queries.
> You can see the implementation here:
> https://github.com/rmagen/elastic-gremlin/blob/master/src/main/java/org/elasticgremlin/process/optimize/ElasticVertexStep.java#L36
> This works great in regular traversals, the "starts" iterator returns as many
> traversers as the previous step gave out.
> But when the step is in an innerTraversal (e.g.
> g.V().repeat(__.out()).times(8)), the "starts" iterator only returns one
> traverser, and will return the next traverser only in the next call to
> processNextStart. Thus, there is no way to run a bulk query.
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