Reset to default
Trending sort is based off of the default sorting method — by highest score — but it boosts votes that have happened recently, helping to surface more up-to-date answers.
It falls back to sorting by highest score if no posts are trending.
Addition to @Binary Nerd
If you are using Spark, use the following to get the Spark version:
Login to the Cloudera Manager and goto Hosts page then run
inspect hosts in cluster
You can get the spark version by using the following command:
spark-submit --version spark-shell --version spark-sql --version
You can visit the below site to know the spark-version used in CDH 5.7.0