Considering the number of segfaults I've witnessed that appear to originate in relatively recent versions of the Parquet library, I don't think your instincts a

Considering the number of segfaults I've witnessed that appear to originate in relatively recent versions of the Parquet library, I don't think your instincts are misplaced. I genuinely worry about data corruption. I've been meaning to take a closer look at ORC. As a Spark user, I just sort of defaulted into Parquet. ORC is very similar, though, and seemingly gives every indication of being the more mature product.