The pushdown applies only to documents that are stored in ES. If your documents are joined (which by the way, is an operation not pushed by Spark) it means they exist in Spark, hence there's nothing really to be pushed down.
The pushdown applies only to documents that are stored in ES. If your documents are joined (which by the way, is an operation not pushed by Spark) it means they exist in Spark, hence there's nothing really to be pushed down.
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