Namenode heap usage has increased dramatically lately

[#1]

Hi everyone) Namenode heap usage has increased dramatically in the last 2 months, while more than half of the productive load has been transferred to another database management system. How to find out why it happened?

[#2]

Hi

Could you compare with the number of files on the same period ? It could be an explanation.

Look the size of the files too, little size files and empty files could be an other explanation.

Regards.