Hi,

JanusGraph/TinkerPop have all necessary Spark dependencies included in their distributions, so Spark compatibility on Spark/Yarn is not an issue as long as you keep the Spark jars of the Yarn cluster from the various CLASSPATHS involved. You can get the general idea by combining:

https://tinkerpop.apache.org/docs/current/recipes/#olap-spark-yarn

and 

https://docs.janusgraph.org/latest/hadoop-tp3.html

What storage backend do you use for JanusGraph? SparkGraphComputer is known to be painfully slow on JanusGraph/HBase (although I am not sure whether reading from the HBase Snaphot feature was ever implemented in JanusGraph, have not ever tried that).

Cheers,    Marc

Op woensdag 24 april 2019 12:42:17 UTC+2 schreef Evgeniy Ignatiev:

Hello.

As far as I remember, Spark compatibility is dictated solely by the corresponding spark-gremlin module from Tinkerpop and 3.3.x release train officially supports only 2.2.
Maybe it is worth duplicating this question to the gremlin-users list? The change that lifted Spark support to 2.3 wasn't large though - https://github.com/apache/tinkerpop/pull/886
it will probably work out of the box with properly fixed Netty dependencies versions.

Best regards,
Evgeniy Ignatiev.

On 4/24/2019 2:25 PM, pol...@... wrote:

Hi,

is it possible to run olap queries using SparkGraphComputer via YARN, with Apache Spark 2.3.2 ?

https://docs.janusgraph.org/latest/version-compat.html states that only 2.2.x is supported. Has anyone tried compatibility with new version of Apache Spark?

Thanks.

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