taking 50GB heap size for name node & SNN to start

[#1]

Hi Team,

We have a cluster of size 5TB but for that fsimage size is 18GB. Becasue of this NN and SNN taking more heap size to start.

please help me for  5TB data why 18gb fsimage size has been created??

how to debug the fsimage size increasing ?? which causes fsimage size increasing??

[#2]

can any one suggest how to troubleshoot this issue??