peter-toth commented on issue #23802: [SPARK-26893][SQL] Allow pushdown of partition pruning subquery filters to file source URL: https://github.com/apache/spark/pull/23802#issuecomment-464433188 @mgaido91 I debugged it and double execution seems expected to me. I use `checkAnswer` in my UT and it executes 2 times the the query using 2 different `QueryExecution`. First `df.rdd.count()` to check RDD serializability and then a few rows later `df.collect()` to collect the results.
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