I recall that the group that created Spark had a bioinformatics project on Spark but I don't know what happened to it. All I could find now is a paper[1] hosted by databricks.
[1]https://databricks.com/wp-content/uploads/2018/08/SSE15-40-D...
[1]https://databricks.com/wp-content/uploads/2018/08/SSE15-40-D...
ADAM is a genomics analysis platform with specialized file formats built using Apache Avro, Apache Spark, and Apache Parquet. Apache 2 licensed.