databricks.koalas.info() doesn't show memory usage

[Ali Waheed]

The documentation states that databricks.koalas.info() shows memory usage too but it doesn't in practice.
It doesn't show memory usage in the examples given in the documentation either.

[Haejoon Lee]

Thanks for the report, @AliWaheed :)
Koalas doesn't show the memory usage because it's hard to calculate it since Koalas runs on a distributed manner.
Seems like it was mistakenly added when copying the pandas' one.
I think we should fix the documents.

[Ali Waheed]

Got it, thanks for the reply