Verify the following Spark configuration properties:

1. spark.sql.adaptive.skewJoin.enabled (default: true): Enables or disables adaptive skew join handling.
2. spark.sql.adaptive.skewJoin.skewedPartitionFactor (default: 5): A multiplier used to determine if a partition is skewed. A partition is considered skewed if its size is more than 5 times the median partition size.
3. spark.sql.adaptive.skewJoin.skewedPartitionThresholdInBytes (default: 256MB): A minimum size threshold for a partition to be considered skewed.

A partition is identified as skewed when: Its size exceeds the product of the skewedPartitionFactor and the median partition size. Its size is greater than the skewedPartitionThresholdInBytes.