I was reading the 7.1 docs and came across this paragraph:
It doesn't make sens to me that it says "Use RLE for low-cardinality columns, where the average repetition count is less than 10" and then says "A gender column with 6 F values and 10 M values, where the average repetition count is 8, does not benefit from RLE."The advantage of RLE is that it reduces disk I/O and results in a smaller storage footprint for the database. Use RLE for low-cardinality columns, where the average repetition count is less than 10. For example, a gender column with 47 F values and 56 M values can benefit from RLE. A gender column with 6 F values and 10 M values, where the average repetition count is 8, does not benefit from RLE.
Isn't 8 < 10 ??? So shouldn't it benefit from RLE?
BTW, here is a link to the confusing text:
https://my.vertica.com/docs/7.1.x/HTML/ ... nce|_____2