[jira] [Created] (IGNITE-9732) Add joins to Spark Dataframe examples

[Anton Vinogradov (Jira)]

Valentin Kulichenko created IGNITE-9732:
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             Summary: Add joins to Spark Dataframe examples
                 Key: IGNITE-9732
                 URL: https://issues.apache.org/jira/browse/IGNITE-9732
             Project: Ignite
          Issue Type: Improvement
          Components: examples, spark
    Affects Versions: 2.6
            Reporter: Valentin Kulichenko
             Fix For: 2.7


{{IgniteDataFrameExample}} creates two tables - {{city}} and {{person}}, but only {{person}} is actually used. Need to add join examples.

Would also be great to demonstrate the fact that optimization is working and joins are executed in Ignite, not Spark (using {{explain()}}, maybe?).



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