The last outbreak lasted from 1967 to 1993, covering 136 million acres across eastern Canada and Maine. It stripped the needles from fir and spruce trees across most of northern Maine, killing 7 ...

ORC is a self-describing type-aware columnar file format designed for Hadoop workloads. It is optimized for large streaming reads, but with integrated support for finding required rows quickly.

Apache Arrow is a universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics. It contains a set of technologies that enable data systems to efficiently ...