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https://issues.apache.org/jira/browse/TINKERPOP-1225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15219843#comment-15219843
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ASF GitHub Bot commented on TINKERPOP-1225:
-------------------------------------------
Github user okram commented on the pull request:
https://github.com/apache/incubator-tinkerpop/pull/285#issuecomment-203927074
```
[INFO]
------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] Apache TinkerPop .................................. SUCCESS [4.350s]
[INFO] Apache TinkerPop :: Gremlin Shaded ................ SUCCESS [2.302s]
[INFO] Apache TinkerPop :: Gremlin Core .................. SUCCESS [40.323s]
[INFO] Apache TinkerPop :: Gremlin Test .................. SUCCESS [12.404s]
[INFO] Apache TinkerPop :: Gremlin Groovy ................ SUCCESS [42.373s]
[INFO] Apache TinkerPop :: Gremlin Groovy Test ........... SUCCESS [6.747s]
[INFO] Apache TinkerPop :: TinkerGraph Gremlin ........... SUCCESS
[3:24.962s]
[INFO] Apache TinkerPop :: Gremlin Benchmark ............. SUCCESS [10.390s]
[INFO] Apache TinkerPop :: Hadoop Gremlin ................ SUCCESS
[11:27.951s]
[INFO] Apache TinkerPop :: Spark Gremlin ................. SUCCESS
[7:01.345s]
[INFO] Apache TinkerPop :: Giraph Gremlin ................ SUCCESS
[2:41:47.692s]
[INFO] Apache TinkerPop :: Neo4j Gremlin ................. SUCCESS
[17:53.279s]
[INFO] Apache TinkerPop :: Gremlin Driver ................ SUCCESS [10.358s]
[INFO] Apache TinkerPop :: Gremlin Server ................ SUCCESS
[12:52.175s]
[INFO] Apache TinkerPop :: Gremlin Console ............... SUCCESS
[1:25.610s]
[INFO] Apache TinkerPop :: Gremlin Archetype ............. SUCCESS [0.086s]
[INFO] Apache TinkerPop :: Archetype - TinkerGraph ....... SUCCESS [4.702s]
[INFO] Apache TinkerPop :: Archetype - Server ............ SUCCESS [10.319s]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 3:38:17.858s
[INFO] Finished at: Wed Mar 30 22:57:45 MDT 2016
[INFO] Final Memory: 99M/765M
[INFO]
------------------------------------------------------------------------
```
> 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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