Hope you are doing well
It seems that you want to concatenate two RDD's. If so, you can achieve it using UNION command.
val joined_rdd = rdd1.union(rdd2)
Where, rdd1 and rdd2 are already defined and you want to concatenate them.This joined rdd value will be in joined_rdd
Hope this resolves your query
In case of any further issue,feel free to revert.
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