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https://issues.apache.org/jira/browse/TINKERPOP-1786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189804#comment-16189804
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ASF GitHub Bot commented on TINKERPOP-1786:
-------------------------------------------
Github user okram commented on a diff in the pull request:
https://github.com/apache/tinkerpop/pull/721#discussion_r142426106
--- Diff: hadoop-gremlin/conf/hadoop-gryo.properties ---
@@ -29,8 +29,8 @@ gremlin.hadoop.outputLocation=output
spark.master=local[4]
spark.executor.memory=1g
spark.serializer=org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer
+gremlin.spark.persistContext=true
--- End diff --
Yes, we know what it does, but by default we have it set to `false` and we
don't want to create a backwards breaking usage.
> Recipe and missing manifest items for Spark on Yarn
> ---------------------------------------------------
>
> Key: TINKERPOP-1786
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1786
> Project: TinkerPop
> Issue Type: Improvement
> Components: hadoop
> Affects Versions: 3.3.0, 3.1.8, 3.2.6
> Environment: gremlin-console
> Reporter: Marc de Lignie
> Priority: Minor
> Fix For: 3.2.7, 3.3.1
>
>
> Thorough documentation for running OLAP queries on Spark on Yarn has been
> missing, keeping some users from getting the benefits of this nice feature of
> the Tinkerpop stack and resulting in a significant number of questions on the
> gremlin users list.
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