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https://issues.apache.org/jira/browse/TINKERPOP-1225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220531#comment-15220531
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ASF GitHub Bot commented on TINKERPOP-1225:
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Github user dkuppitz commented on the pull request:
https://github.com/apache/incubator-tinkerpop/pull/285#issuecomment-204089672
VOTE: +1
> Do a "rolling reduce" for GroupXXXStep in OLAP.
> -----------------------------------------------
>
> Key: TINKERPOP-1225
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1225
> Project: TinkerPop
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.1.1-incubating
> Reporter: Marko A. Rodriguez
> Assignee: Marko A. Rodriguez
>
> {{GroupXXXStep}} in OLAP is able to process traversers up to the first
> barrier in the reduction. 99% of the time, the first barrier is the last
> barrier and thus, you get a nice lazy computation which limits the memory
> footprint.
> Unfortunately, we don't have this luxury in OLAP. Until!!! However, the work
> that [~spmallette] did to get {{GroupBiOperator}} to serialize with
> traversals might make it possible for us to merge barriers in the reduction
> and thus have OLAP and OLTP {{GroupXXXStep}} behave analogously.
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